The Role of Gibberellin in the Response of Rice to Hirschmanniella oryzae Infection

Hossain, Mohammod; Nahar, Kamrun; Gheysen, Godelieve

doi:10.1007/s13369-017-2603-2

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…To further distinguish and identify the ability of PGPRs to produce phytohormones, another bioassay was performed on gibberellin-deficient (Waito-C; Mitsunaga and Yamaguchi 1993;Hossain et al 2017) and normal rice (Whayoungbeyo) cultivars. Seeds of both rice cultivars were sterilized and treated as described above for soybean seeds.…”

Section: Selection Of Plant Growth-promoting Strainsmentioning

confidence: 99%

Integrated phytohormone production by the plant growth-promoting rhizobacterium Bacillus tequilensis SSB07 induced thermotolerance in soybean

Kang

Khan

Waqas

et al. 2019

Journal of Plant Interactions

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As a result of climate change, crops often experience high-temperature stress that can drastically hinder plant growth and development. In soybean, an economically important crop that is highly sensitive to heat stress, the use of plant growth-promoting rhizobacteria (PGPRs) represents a promising strategy for countering the negative effects of heat stress. Accordingly, a novel strain of Bacillus tequilensis (i.e. SSB07) that grows actively at high temperatures was isolated, identified, and characterized in the present study. SSB07 improved the growth of Chinese cabbage seedlings and was shown to produce the gibberellins GA 1 , GA 3 , GA 5 , GA 8 , GA 19 , GA 24 , and GA 53 , as well as indole-3-acetic acid and abscisic acid. The application of B. tequilensis SSB07 was also found to increase the shoot length and biomass, leaf development, and photosynthetic pigment contents of soybean plants, and under heat stress, SSB07 inoculation significantly increased the endogenous jasmonic acid and salicylic acid contents of the phyllosphere and significantly down-regulated the production of stress-responsive ABA. Thus, B. tequilensis SSB07 shows promise for countering the negative effects of climate change on crop growth and development.

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Section: Selection Of Plant Growth-promoting Strainsmentioning

confidence: 99%

Integrated phytohormone production by the plant growth-promoting rhizobacterium Bacillus tequilensis SSB07 induced thermotolerance in soybean

Kang

Khan

Waqas

et al. 2019

Journal of Plant Interactions

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“…Treatment with GA enhances RKN infection in rice (Hossain et al ., 2017; Yimer et al ., 2018). However, it was unknown whether GA affects SCN development in soybean roots.…”

Section: Resultsmentioning

confidence: 99%

WI12_Rhg1 interacts with DELLAs and mediates soybean cyst nematode resistance through hormone pathways

Dong

Hudson

2021

Plant Biotechnology Journal

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Summary The soybean cyst nematode (SCN) is one of the most important causes of soybean yield loss. The major source of genetic resistance to SCN is the Rhg1 repeat, a tandem copy number polymorphism of three genes. The roles of these genes are only partially understood. Moreover, nematode populations virulent on Rhg1‐carrying soybeans are becoming more common, increasing the need to understand the most successful genetic resistance mechanism. Here, we show that a Rhg1‐locus gene (Glyma.18G02270) encoding a wound‐inducible protein (WI12Rhg1) is needed for SCN resistance. Furthermore, knockout of WI12Rhg1 reduces the expression of DELLA18, and the expression of WI12Rhg1 is itself induced by either JA, SA or GA. The content of the defence hormone SA is significantly lower whilst GA12 and GA53 are increased in WI12Rhg1 knockout roots compared with unedited hairy roots. We find that WI12Rhg1 directly interacts with DELLA18 (Glyma.18G040000) in yeast and plants and that double knockout of DELLA18 and its homeolog DELLA11 (Glyma.11G216500) significantly reduces SCN resistance and alters the root morphology. As DELLA proteins are implicated in hormone signalling, we explored the content of defence hormones (JA and SA) in DELLA knockout and unedited roots, finding reduced levels of JA and SA after the knockout of DELLA. Additionally, the treatment of DELLA‐knockout roots with JA or SA rescues SCN resistance lost by the knockout. Meanwhile, the SCN resistance of unedited roots decreases after the treatment with GA, but increases with JA or SA. Our findings highlight the critical roles of WI12Rhg1 and DELLA proteins in SCN resistance through interconnection with hormone signalling.

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“…BR treatment can alleviate the symptoms of rice blast and bacterial blight [18]. Exogenous GA could increase the resistance of Magnaporthe oryzae in rice [19].…”

Section: Introductionmentioning

confidence: 99%

Comparative transcriptome profiling of resistant and susceptible foxtail millet responses to Sclerospora graminicola infection

Wang

Han

et al. 2022

Preprint

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Background: Downy mildew of foxtail millet, which is caused by the biotrophic oomycetes Sclerospora graminicola (Sacc.) Schroeter, is one of the most disruptive diseases in foxtail millet. The foxtail millet-S. gramnicola interaction is very poor and largely unexplored. Transcriptome sequencing technology is helpful to reveal the interaction mechanism between foxtail millet and pathogen. Results: In this study, Transmission electron microscopy observation of leaves infected by S. gramnicola showed that the structures of organelles in the host cells were gradually deformed and damaged, or even disappeared from 3- to 7-leaf stages. However, organelles in leaves of resistant varieties were rarely damaged. Meanwhile, the activities of seven cell wall degrading enzymes in resistant and susceptible varieties were also quite different after pathogen induced. Subsequently, we have compared the transcriptional profiles between resistant G1 and high susceptible variety Jingu21 in response to S.graminicola infection at 3, 5, 7 leave stages using the RNA-Seq technology. 473 and 1433 differentially expressed genes (DEGs) were identified in resistance and susceptible varieties, respectively. The pathway analysis of DEGs showed that the highly enriched categories were related to glutathione metabolism, plant hormone signaling, phenylalanine metabolism and cutin, suberine and wax biosynthetic. Some defence-related genes were also revealed in the DEGs, including leucine-rich protein kinase, Ser/Thr protein kinase, peroxidase, cell wall degrading enzymes, laccases and auxin response genes. Equally notable is that the pathyway of starch and sucrose metabolism was enrichment in three infected stages, most of the genes were specifically up-regulated at 5L in susceptible variety, indicating that the expression of genes might be beneficial to and promote the interaction between host and pathogen. Conclusions: Transcriptome sequencing was revealed that host resistance to S. graminicola was likely due to the activation of defense related genes, such as leucine-rich protein kinase, Ser/Thr protein kinase, and alteration of signaling pathways related to hormome. Our study identified pathyway and genes were contributed to the understanding at transcriptomic level of the interaction between foxtail millet and S.graminicola. The results will help to better understand downy mildew of foxtail millet resistance mechanism against S. graminicola.

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The Role of Gibberellin in the Response of Rice to Hirschmanniella oryzae Infection

Cited by 5 publications

References 14 publications

Integrated phytohormone production by the plant growth-promoting rhizobacterium Bacillus tequilensis SSB07 induced thermotolerance in soybean

Integrated phytohormone production by the plant growth-promoting rhizobacterium Bacillus tequilensis SSB07 induced thermotolerance in soybean

WI12_Rhg1 interacts with DELLAs and mediates soybean cyst nematode resistance through hormone pathways

Comparative transcriptome profiling of resistant and susceptible foxtail millet responses to Sclerospora graminicola infection

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The Role of Gibberellin in the Response of Rice to Hirschmanniella oryzae Infection

Cited by 5 publications

References 14 publications

Integrated phytohormone production by the plant growth-promoting rhizobacterium Bacillus tequilensis SSB07 induced thermotolerance in soybean

Integrated phytohormone production by the plant growth-promoting rhizobacterium Bacillus tequilensis SSB07 induced thermotolerance in soybean

WI12Rhg1 interacts with DELLAs and mediates soybean cyst nematode resistance through hormone pathways

Comparative transcriptome profiling of resistant and susceptible foxtail millet responses to Sclerospora graminicola infection

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WI12_Rhg1 interacts with DELLAs and mediates soybean cyst nematode resistance through hormone pathways