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Том 63, № 5 (2016)

Reviews

Cell type specificity of plant hormonal signals: Case studies and reflections on ethylene

Vaseva I., Vandenbussche F., Simon D., Vissenberg K., Van Der Straeten D.

Аннотация

In the light of increasing evidence that plant growth and development depend on signals perceived in distinct cell types where hormonal inputs are transformed into orchestrated responses triggering a plethora of physiological processes, we reflect on the case of ethylene signaling. Experimental approaches to address cell type-specificity of the ethylene response are discussed and future challenges in ethylene signaling studies are outlined.

Russian Journal of Plant Physiology. 2016;63(5):577-586
pages 577-586 views

Research Papers

Ethylene is involved in the actin cytoskeleton rearrangement during the root gravitropic response of Arabidopsis thaliana

Pozhvanov G., Gobova A., Bankin M., Vissenberg K., Medvedev S.

Аннотация

Gravitropism, the directed plant growth with respect to the gravity vector, is regulated by auxin and its polar transport system, several secondary messengers, and by the cytoskeleton. Recently we have shown that the actin cytoskeleton in the root transition zone of Arabidopsis thaliana (L.) Heynh was rearranged after gravistimulation (rotation by 90°): the fraction of axially aligned microfilaments decreased and the fraction of oblique and transversally-oriented microfilaments increased. In the present research we have studied the effect of ethylene and inhibitors of its synthesis on actin cytoskeleton rearrangement during the gravitropic response. Application of the ethylene releasing substance ethephon to A. thaliana seedlings led to the disassembly of actin microfilaments as well as their broad angle distribution in cells of the root transition zone. This actin rearrangement was escaped by treatment with the ethylene synthesis inhibitor aminoethoxyvinylglycine (AVG). Another negative regulator of ethylene, salicylic acid, was shown to disturb actin microfilament rearrangement as well. We conclude that ethylene is essential for the process of actin cytoskeleton rearrangement in root cortex cells during the gravitropic bending response.

Russian Journal of Plant Physiology. 2016;63(5):587-596
pages 587-596 views

Dependence of root biomass accumulation on the content and metabolism of cytokinins in ethylene-insensitive plants

Korobova A., Vysotskaya L., Vasinskaya A., Kuluev B., Veselov S., Kudoyarova G.

Аннотация

Diverse functions of ethylene in plants may depend on its ability to interact with other hormones. We studied the participation of ethylene in the regulation of accumulation and metabolism of cytokinins comparing ethylene-insensitive mutant plants of arabidopsis (Arabidopsis thaliana [L.] Heynh., etr1-1) with the plants of original ecotype Columbia (Col-0). Because cytokinins can regulate growth of both leaves and roots, we determined the weights of these organs and the ratio between them. The content of zeatin and its riboside in the roots of etr1-1 plants was two times greater than in Col-0 plants, which could be accounted for by inhibition of conversion of these forms of cytokinins into 9-N-glucosides. In the leaves of mutant plants, expression of IPT3 gene responsible for the synthesis of cytokinins was more intense than in Col-0 plants, which could also contribute to a rise in the content of cytokinins. In this case, the weight of roots in etr1-1 mutants was lower than in the plants of original ecotype. Because high concentrations of cytokinins can inhibit root growth, suppression of accumulation of their biomass in mutant plants may be related to a greater content of cytokinins therein. The obtained results suggest that ethylene can suppress accumulation of cytokinins and, thereby, maintain redistribution of biomass in favor of the roots, which is important for plant adaptation to a shortage of water and ions.

Russian Journal of Plant Physiology. 2016;63(5):597-603
pages 597-603 views

Involvement of ethylene in UV-B-induced changes in polyamine content in Arabidopsis thaliana plants

Prudnikova O., Rakitina T., Karyagin V., Vlasov P., Rakitin V.

Аннотация

Components of the ethylene signal perception and transduction pathway (ethylene signaling pathway, ESP) were studied in respect to their involvement in regulation of UV-B-induced changes in levels of polyamines in plants Arabidopsis thaliana (L.) Heynh. Experiments were performed on 15-day old wild type (WT) plants, the mutant etr1-1 with impaired ethylene reception, and the ethylene-insensitive mutant ctr1-1 with constitutively activated ESP. The plants were cultivated aseptically. It was found that exogenous ethylene or an inhibitor of its action 1-methylcyclopropen (1-MCP), which blocks ethylene receptors did not affect the polyamine content in leaf rosettes of plants, which had not been subjected to UV-B stress. A day after UV-B irradiation at intermediate (9 kJ/m2) or high doses (18 kJ/m2), the putrescine levels increased, respectively, 6.4 and 3.0 times in WT, 4.5 and 3.2 times in etr1-1, and 5.5 and 4.7 in ctr1-1. Pretreatment with ethylene (1 μL/L) for 24 h reduced the putrescine accumulation along with the loss in spermidine and spermine pools in WT plants and, to a lesser extent, in etr1-1 mutant. Treatment with 1-MCP (50 nL/L, 3 h before and 24 h after the irradiation) enhanced plant sensitivity to UV-B, putrescine accumulation, as well as spermidine and spermine consumption in WT and, to a lesser degree, in etr1-1. The mutant ctr1-1 was insensitive to both ethylene and 1-MCP. The results show that the activation of ESP by ethylene increases plant resistance to UV-B because the irradiation stimulates accumulation of putrescine, which converts to spermidine and spermine functioning as ROS traps.

Russian Journal of Plant Physiology. 2016;63(5):604-608
pages 604-608 views

Roles of ethylene and cytokinins in development of defense responses in Triticum aestivum plants infected with Septoria nodorum

Veselova S., Burkhanova G., Nuzhnaya T., Maksimov I.

Аннотация

Effects of ethephon (2-chloroethylphosphonic acid, ET), which is a producer of ethylene, and 1-methylcyclopropene (1-MCP), which inhibits ethylene binding with the corresponding receptors, on defense responses caused by the causal agent of leaf blotch (Septoria nodorum Berk.) in leaves of soft spring wheat (Triticum aestivum L.) of cultivars contrast in the resistance to the pathogen were studied. After treatment with 1-MCP, an induction of wheat resistance to the disease, more prominent in the susceptible cv. Kazakhstanskaya 10 than in the resistant cv. Omskaya 35, was found. The rise in the resistance was accompanied by rise in zeatin content in leaves, enhanced generation of hydrogen peroxide (most likely, due to the decreased catalase activity and increased peroxidase activity), and accumulation of transcripts of marker genes of the salicylate signaling pathway (PR-1 and PR-2). On the contrary, in ET-treated plants, all the studied defense responses were inhibited, and the pathogen developed more intensively. The effect of ethylene on zeatin distribution in infected wheat leaves of the susceptible cv. Kazakhstanskaya 10 was also found. In the 1-MCP-treated wheat leaves, cytokinins were localized in mesophyll cells and cell walls. In the ET-treated leaves, cell walls were free of zeatin, and the hormone concentrated in developing hyphae of the pathogen. The results allow for the hypothesis that wheat plant resistance is controlled by antagonistic interaction of signaling pathways of salicylic acid and ethylene with participation of cytokinins.

Russian Journal of Plant Physiology. 2016;63(5):609-619
pages 609-619 views

Characteristics of photosynthesis in maize leaves (С4 plants) upon changes in the level of illuminance and nitrate nutrition

Chikov V., Abdrakhimov F., Batasheva S., Khamidullina L.

Аннотация

We studied assimilation of 14СО2 and distribution of 14С among the products of 3-min-long photosynthesis of maize (Zea mays L.) leaves. The day before the experiment, half of the plants were fertilized with Ca(NO3)2 (1 g/L of water) at a rate of 6 L/m2. Five days before the experiment, some plants were shaded for adaptation (illuminance was reduced by 50%). On the day of the experiment (before the application of 14СО2), several shaded plants were exposed to direct sunlight for 3 min, and some plants grown at full light (light plants) were shaded for 3 min (illuminance of 50%). Unfertilized plants adapted for 5 days to shading showed photosynthesis of 75.9% of control level (full light). If light plants were transferred to shading for 3 min, their photosynthesis decreased to 42.1%. In plants shaded for 5 days and then transferred to full light, photosynthesis in 3 min was 96.3% of control level. At full light, fertilization with nitrate boosted photosynthesis to 132.6% as compared with control material, but photosynthesis decreased to 43.5 and 65.4% of control level in plants shaded for 5 days and those shaded for 3 min, respectively. At the same time, the plants shaded for 5 days and then exposed for 3 min to full light restored photosynthesis to almost control level (95.5%). Analysis of 14С distribution among the products of 3-min-long photosynthesis showed that, the same as in C3 plants, a decrease in illuminance (especially a sudden one) in maize reduced the ratio between labeled sucrose and hexoses and elevates incorporation of 14С into malate, which indicated that its consumption in bundle sheath cells was suppressed. A decrease in the ratio between labeled sucrose and hexoses became more pronounced under the influence of nitrates with this effect also occurring in transport products of photosynthesis (20 cm below 14С-providing leaf area). In plants fertilized with nitrates, radioactivity of sucrose (% of radioactivity of soluble compounds) decreased in all the types of illumination. When illuminance was suddenly reduced for 3 min, incorporation of 14С into sucrose was 21.5 against 51.2% in light plants, and radioactivity of aspartate and malate sharply rose to 13.7 and 26.1% (against 2.1 and 8.9% in control material). Incorporation of 14С into compounds of glycolate pathway was low (less than 2.5%), but it was somewhat greater in nitrate plants. We concluded that the same mechanism of interaction between stomatal apparatus of leaf epidermis, invertase of mesophyll apoplast, and photosynthetic metabolism of carbon with electron flux via electron transport chain in chloroplasts of bundle sheath cells, which governs the rate of photosynthesis and assimilate export from the leaf but is triggered by the extent of consumption in the bundle sheath cells of C4 acids produced in the mesophyll operates in C4 plants (the same as in C3 plants).

Russian Journal of Plant Physiology. 2016;63(5):620-625
pages 620-625 views

Interactive effects of zinc and nickel on the glutathione system state in Mimulus guttatus plants

Bashmakova E., Pashkovskiy P., Radyukina N., Kuznetsov V.

Аннотация

To determine whether the enhanced stress tolerance of ZnSO4 with NiSO4-treated Mimulus guttatus Fischer ex DC. plants was associated with the glutathione (GR-GSH) system, we investigated the changes in glutathione redox state (reduced (GSH), oxidized (GSSG) forms, total reduced (GSHt) glutathione, and GSH/GSSG ratio) and in the enzymatic activities of glutathione reductase (GR) and peroxidatic glutathione S-transferases (GST). The 6-week-old plants were grown in water culture during 4 weeks on a modified Rorison’s medium with ZnSO4 (50, 100, and 200 μM) and NiSO4 (20 and 80 μM) in a condition of separate or simultaneous supply of the components. Dry biomass accumulations of roots and shoots were not influenced by the examined treatments. The positive correlations between the total external concentrations of ZnSO4 and NiSO4 and the total Zn and Ni contents in roots and leaves were found. It was determined that the MDA content was higher in the ZnSO4-treated plants than in the NiSO4-treated ones. The supplementation of the ZnSO4-treated plants with varied concentrations of NiSO4 decreased the Zn-induced increase in the MDA levels. The inverse proportionality between the MDA and pigment levels in leaves was found. The Zn-Ni interactions were shown to induce the decreases in the GR activity, the total peroxidatic GST activity, and the GSH/GSSG ratio in roots. However, in leaves, the GR activity and the GSH/GSSG ratio were significantly increased and the total peroxidatic GST activity was decreased. The supplementation of the ZnSO4-treated plants with varied concentrations of NiSO4 restored the Zn-induced reduction in the GSHt levels in roots and decreased the Zn-induced increase in the GSSG levels in leaves, which resulted in more reduced state of the intracellular environment. It was likely to cause a decrease of the MDA level. Thus, our studies on the Zn−Ni interactions identified the antagonizing role of Ni in Zn toxicity by the GR-GSH system.

Russian Journal of Plant Physiology. 2016;63(5):626-635
pages 626-635 views

Increasing Triticum aestivum tolerance to cadmium stress through endophytic strains of Bacillus subtilis

Kuramshina Z., Smirnova Y., Khairullin R.

Аннотация

Impact of inoculation of wheat seeds with endophytic strains of B. subtilis bacterium on revealing cadmium phytotoxicity of the plants was investigated. It was shown that, in the presence of Cd in the plants whose seeds were inoculated with the above bacteria, the activities of catalase and peroxidase and the content of nonprotein thiols were increased, while an intensity of lipid peroxidation decreased. Moreover, inoculation of plant seeds with the bacteria contributed to lowering the metal content in plant shoots.

Russian Journal of Plant Physiology. 2016;63(5):636-644
pages 636-644 views

Effects of exogenous spermidine on antioxidant system of tomato seedlings exposed to high temperature stress

Sang Q., Shu S., Shan X., Guo S., Sun J.

Аннотация

The effects of foliar spraying with spermidine (Spd) on antioxidant system in tomato (Lycopersicon esculentum Mill.) seedlings were investigated under high temperature stress. The high temperature stress significantly inhibited plant growth and reduced chlorophyll (Chl) content. Application of exogenous 1 mM Spd alleviated the inhibition of growth induced by the high temperature stress. Malondialdehyde (MDA), hydrogen peroxide (H2O2) content and superoxide anion (O2) generation rate were significantly increased by the high temperature stress, but Spd significantly reduced the accumulation of reactive oxygen species (ROS) and MDA content under the stress. The high temperature stress significantly decreased glutathione (GSH) content and activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR), monodehydroascorbate reductase (MDHAR) and dehydroascorbate reductase (DHAR), but increased contents of dehydroascorbic acid (DHA), ascorbic acid (AsA), and oxidized glutathione (GSSG) in tomato leaves. However, Spd significantly increased the activities of antioxidant enzymes, levels of antioxidants and endogenous polyamines in tomato leaves under the high temperature stress. In addition, to varying degrees, Spd regulated expression of MnSOD, POD, APX2, APX6, GR, MDHAR, DHAR1, and DHAR2 genes in tomato leaves exposed to the high temperature stress. These results suggest that Spd could change endogenous polyamine levels and alleviate the damage by oxidative stress enhancing the non-enzymatic and enzymatic antioxidant system and the related gene expression.

Russian Journal of Plant Physiology. 2016;63(5):645-655
pages 645-655 views

Synthesis and biological activities of novel pyridazine derivatives

Tiratsuyan S., Hovhannisyan A., Karapetyan A., Gomktsyan T., Yengoyan A.

Аннотация

A series of pyridazine derivatives was synthesized and some of them showed a growth stimulatory activity during preliminary screening. Their effects on germination, morphogenesis, peroxidase activity and lignan content were tested on common bean (Phaseolus vulgaris L.) plants. 2-[4-(6-ethoxy-pyridazin-3-ylsulfanyl)-6-ethylamino-[1,3,5]triazin-2-ylsulfanyl]-acetamide (C8) accelerated flowering and fruit production. In these plants, total lignan amount in the leaves correlated with the corresponding peroxidase activities. This compound can be recommended against the lodging of crops. Like IAA, 2-(6-ethoxy-pyridazin-3-yl)-isothiourea hydrochloride (C3) stimulated adventitious root growth with necrotic transformation of the bottom stem node. It promoted growth of leaves, the early reproductive development and pod formation. Preparations C3 and C8 can be recommended for the shortening of the juvenile time. In plants treated with each of these compounds, the highest content of lignans was recorded possibly relating to type I “non-host”—like plants resistance. 2-(6-chloro-pyridazin-3-yl)-isothiourea hydrochloride (C2) exerted a stimulatory effect on the growth of vegetative organs.

Russian Journal of Plant Physiology. 2016;63(5):656-662
pages 656-662 views

Structural and functional analysis of new plant promoter pro-SmAMP1 from Stellaria media

Vysotskii D., Strelnikova S., Efremova L., Vetchinkina E., Babakov A., Komakhin R.

Аннотация

The nucleotide sequence of a fragment of the promoter region of pro-SmAMP1 gene, having a length of 1257 bp and encoding antifungal peptides, was determined in chickweed (Stellaria media (L.) Vill.). Computer analysis of the nucleotide sequence revealed a number of cis-elements that are typical strong plant promoters. Five 5′-deletion variants were created taking into account the distribution of cis-elements:–1235,–771,–714,–603, and–481 bp of pro-SmAMP1 gene promoter, which were fused to the coding region of the uidA reporter gene in pCambia1381Z plant expression vector. The efficacy of pro-SmAMP1 promoter deletion variants was determined by transient expression in plants of Nicotiana benthamiana and using sequential generations of transgenic Nicotiana tabacum plants. It was found that the levels of GUS reporter protein activity in the extracts from transgenic and agroinfiltrated plants using all deletion variants of pro-SmAMP1 gene promoter were 3–5 times higher than those of 35S CaMV viral promoter. The highest activity of GUS protein was observed in the leaves of transgenic tobacco plants and closely correlated with the mRNA level of encoding gene. The levels of GUS activity did not differ significantly among 11 independent homozygous lines of T2 generation of N. tabacum plants with different deletion variants of pro-SmAMP1 promoter. The results give reason to assume that all deletion variants of pro-SmAMP1 promoter provide stable and high level of expression of controlled genes. The shortest deletion variant–481 bp of pro-SmAMP1 promoter should be viewed as a potentially strong plant promoter for the genetic engineering of plants.

Russian Journal of Plant Physiology. 2016;63(5):663-672
pages 663-672 views

Production of proinsulin in marker-free transgenic tobacco plants using CRE/loxP system

Zheng L., Peng Z., Jiao Q., Wang Y., Bian F., Qu S., Wan S., Bi Y.

Аннотация

The demand for INSULIN is increasing rapidly along with the increased number of diabetic patients. Using the CRE/loxP system, we developed a selective marker-free system without crossing to produce PROINSULIN in transgenic plant. In frame of this approach, the induced promoter pRD29A was isolated from Arabidopsis. The CRE recombinase gene was placed under the control of pRD29A between two loxP recombination sites together with the selective NPTII gene. Furthermore, the binary vector with CRE recombinase and PROINSULIN was constructed and introduced into tobacco (Nicotiana tabacum L.) by Agrobacterium-mediated transformation. Gene excision was used to remove the sequence between the two loxP sites at the presence of 200 mM NaCl. PCR analysis showed that self-excision occurred in several T0 transgenic plants. Transgenic plants without any marker gene successfully expressed PROINSULIN. This auto-excision strategy provides efficient means of removing the selectable marker gene from transgenic plants. It is an efficient method for producing bio-safe recombinant protein and other valuable substances in plants.

Russian Journal of Plant Physiology. 2016;63(5):673-677
pages 673-677 views

Transgenic sorghum with improved digestibility of storage proteins obtained by Agrobacterium-mediated transformation

Elkonin L., Italianskaya J., Domanina I., Selivanov N., Rakitin A., Ravin N.

Аннотация

Development of transgenic plants with modified seed storage protein composition and increased nutritive value is one of the most promising areas of genetic engineering. This task is especially important for sorghum—a unique drought tolerant cereal crop that is characterized, however, by a relatively poor nutritive value in comparison with other cereals. It is considered that one of the reasons of the low nutritive value of the sorghum grain is the resistance of one of its seed storage proteins, γ-kafirin, located in the outer layer of endosperm protein bodies, to protease digestion. Using Agrobacterium-mediated genetic transformation, we obtained transgenic sorghum plants (Sorghum bicolor (L.) Moench) harboring a genetic construct for RNAi silencing of the γ-kafirin gene. In the T1 generation, the plants with almost floury or modified endosperm texture of kernels were found. In these kernels, the vitreous endosperm layer has been reduced and/or covered by a thin layer of floury endosperm. In vitro protein digestibility (IVPD) analysis showed that the amount of undigested protein in transgenic plants from the T3 generation was reduced by 2.9–3.2 times, in comparison with the original non-transgenic line, and the digestibility index reached 85–88% (in comparison with 59% in the original line). In T2 families, the plants combining high IVPD with vitreous endosperm type were found. In the electrophoretic spectra of endosperm proteins of transgenic plants with increased digestibility, the proportion of 20 kD protein that is encoded by the γ-kafirin gene, was significantly reduced, in comparison with the original non-transgenic line. HPLC analysis showed total amino acid content in two out of the three studied transgenic plants from the T2 generation was reduced in comparison with the original non-transgenic line, while the lysine proportion increased by 1.6–1.7 times. The mechanisms conditioning improved digestibility of storage proteins in transgenic plants are discussed. The results of experiments demonstrate that it is feasible to develop sorghum lines combining high protein digestibility and vitreous endosperm that has a high breeding value.

Russian Journal of Plant Physiology. 2016;63(5):678-689
pages 678-689 views

Reduced GA biosynthesis in GmRAV-transgenic tobacco causes the dwarf phenotype

Zhao L., Yang X., Du H., Li M., Ding F., Lv Q., Wang C., Wang P., Zhang K., Nie T., Li W.

Аннотация

GmRAV-transgenic tobacco plants exhibited decreased gibberellins (GAs) biosynthesis related phenotypes, including dwarfism and repressed flowering time. The dwarf phenotype of GmRAV-overexpressing (ox) tobaccos was fully restored in stem and hypocotyl length of transgenic plants by the application of exogenous GA3. The epidermal cells in the stem internodes of the GmRAV-ox tobacco plants treated with GA3 were obviously the same as those in wild-type plants in longitudinal direction. Therefore, the rescued plant height of GmRAV-ox tobaccos by GA3 might be largely caused by increased cell size. GmRAV overexpression inhibited GA biosynthesis due to a transcriptional repression of GA20ox gene. The dwarfed phenotype of GmRAV-ox tobaccos with reduced stem elongation could be caused by a reduction in GA3 content.

Russian Journal of Plant Physiology. 2016;63(5):690-694
pages 690-694 views

Physiological and biochemical adaptations in lentil genotypes under drought stress

Mishra B., Srivastava J., Lal J., Sheshshayee M.

Аннотация

Drought is a major restrictive factor for declining grain yield in lentil globally. Present investigation was conducted by taking microsperma (HUL-57) and macrosperma (IPL-406) genotypes of lentil (Lens culinaris Medik.) as information regarding physiological and biochemical basis of differences in drought resistance in macrosperma (bold-seeded) and microsperma (small-seeded) are not well understood. Pot grown plants were exposed to drought stress at specific phenophase viz. mid-vegetative, flower initiation and pod formation stage by withholding irrigation till the plants experienced one cycle of permanent wilting (PWP). Genotypes exhibited substantial differences for most of the measured traits under drought irrespective of the phenophase of stress imposed. Under drought HUL-57 had lower CMI, higher CSI, lower values of Δ13C, maintained higher SLN, accumulated more N and efficiently remobilized accumulated N to developing seeds. Higher chlorophyll content, increased accumulation of osmotically active solutes viz. soluble sugars and proline under drought stress was evident in HUL-57. Drought induced H2O2 accumulation and lipid peroxidation in both genotypes, but increments were of lesser magnitudes in HUL-57. Drought stress of pod formation stage followed by flower initiation stage was most damaging than the stress imposed at mid-vegetative stage in both genotypes. HUL-57 showed a better drought resistance capacity than IPL-406. Drought indices viz. DSI, STI and MP are proposed as criterion to identify and breed lentil genotypes for drought conditions.

Russian Journal of Plant Physiology. 2016;63(5):695-708
pages 695-708 views

Physiological and proteomic analysis of mycorrhizal Pinus massoniana inoculated with Lactarius insulsus under drought stress

Xu C., Wu X.

Аннотация

This study aimed to investigate physiological and protein expression alterations of mycorrhizal Pinus massoniana Lamb. inoculated with Lactarius insulsus in response to drought stress. The P. massoniana seedlings were inoculated with L. insulsus (Li group) and ectomycorrhized fungal-free filtrate (control, CK group), respectively. After two and a half years, all the plants were exposed to a simulate drought condition without water for 21 days. The soil relative water content (SRWC), wilting degree (WD) and wilting rate (WR) of the plants were measured and root proteome was analyzed based on two-dimensional gel electrophoresis (2-DE), respectively at four time points as 0, 7, 14 and 21 days during the whole drought period. Finally, the electrospray ionization mass spectrometry (ESI-MS) was used to identify the differentially expressed proteins (DEPs) between Li and CK groups. The SRWC was higher, while WR and WD were lower in Li group, compared with that in CK group. Based on 2-DE and ESI-MS, 22 DEPs were identified between Li and CK groups during drought stress. Among them, four proteins had the annotated information in relevant databases, including 1,4-benzoquinone reductase, PSCHI4, ribosomal protein L16 (RPL16) and AINTEGUMENTA-like (AIL) protein. Mycorrhizal P. massoniana inoculated with L. insulsus achieved an enhanced drought resistance as compared to the non-mycorrhizal, and the altered protein expressions such as 1,4-benzoquinone reductase, PSCHI4, RPL16, and AIL might contribute to the improved resistance under drought stress.

Russian Journal of Plant Physiology. 2016;63(5):709-717
pages 709-717 views