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Inoculation with Bacillus amyloliquefaciens and mycorrhiza confers tolerance to drought stress and improve seed yield and quality of soybean plant

文献类型： 外文期刊

作者： Sheteiwy, Mohamed S. 1 ; Abd Elgawad, Hamada 3 ; Xiong, You-Cai 4 ; Macovei, Anca 5 ; Brestic, Marian 6 ; Skalicky, 1 ;

作者机构： 1.Jiangsu Acad Agr Sci JAAS, Inst Agr Resources & Environm, Salt Soil Agr Ctr, Nanjing 210014, Peoples R China

2.Mansoura Univ, Fac Agr, Dept Agron, Mansoura, Egypt

3.Univ Beni Suef, Fac Sci, Dept Bot, Bani Suwayf, Egypt

4.Lanzhou Univ, Sch Life Sci, Inst Arid Agroecol, State Key Lab Grassland Agroecosyst, Lanzhou, Peoples R China

5.Univ Pavia, Dept Biol & Biotechnol, Pavia, Italy

6.Czech Univ Life Sci Prague, Fac Agrobiol Food & Nat Resources, Dept Bot & Plant Physiol, Prague, Czech Republic

7.Slovak Univ Agr, Dept Plant Physiol, Nitra, Slovakia

8.Nanjing Forestry Univ, Coll Chem Engn, Nanjing, Peoples R China

9.Hohai Univ, Coll Agr Sci & Engn, Nanjing, Peoples R China

10.Mansoura Univ, Fac Agr, Dept Agr Microbiol, Mansoura 35516, Egypt

关键词： AMF; biofertilizer; carbohydrate mobilization; seed metabolism; soybean yield; water deficit

期刊名称：PHYSIOLOGIA PLANTARUM （ 影响因子：4.148； 五年影响因子：3.947 ）

ISSN： 0031-9317

年卷期：

页码：

收录情况： SCI

摘要： The present study aimed to evaluate the effect of Bacillus amyloliquefaciens and/or Arbuscular Mycorrhizal Fungi (AMF) as natural biofertilizers on biomass, yield, and seed nutritive quality of soybean (Giza 111). The conditions investigated include a well-watered (WW) control and irrigation withholding at the seed development stage (R5, after 90 days from sowing) (DS). Co-inoculation with B. amyloliquefaciens and AMF, resulted in the highest plant biomass and yield under WW and DS conditions. The nuclear DNA content analysis suggested that co-inoculation with B. amyloliquefaciens and AMF decreased the inhibition of drought stress on both the size and granularity of seed cells, which were comparable to the normal level. The single or co-inoculation with B. amyloliquefaciens and AMF increased the primary metabolites content and alleviated the drought-induced reduction in soluble sugars, lipids, protein and oil contents. Plant inoculation induced the expression of genes involved in lipid and protein biosynthesis, whereas an opposite trend was observed for genes involved in lipid and protein degradation, supporting the observed increase in lipid and protein content. Plant inoculated with B. amyloliquefaciens showed the highest alpha-amylase and beta-amylase activities, indicating improved osmolyte (soluble sugar) synthesis, particularly under drought. Interestingly, single or co-inoculation further strengthen the positive effect of drought on the antioxidant and osmoprotectant levels, i.e. phenol, flavonoid, glycine betaine contents, and glutathione-S-transferase (GST) activity. As a result of stress release, there was a decrease in the level of stress hormones (abscisic acid, ABA) and an increase in gibberellin (GA), trans-zeatin-riboside (ZR), and indole acetic acid (IAA) in the seeds of inoculated plants. Additionally, the ATP content, hydrolytic activities of plasma membrane H+-ATPase, Ca2+-ATPase, and Mg2+-ATPase were also increased by the inoculation.

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