Brassinosteroid Signaling in Plant–Microbe Interactions

Yu, Mei‐Hui; Zhao, Zhe-Ze; He, Jun

doi:10.3390/ijms19124091

Cited by 86 publications

(72 citation statements)

References 99 publications

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“…Under normal conditions, the BR pathway is a major growth-related hormone pathway that also is involved in defense responses against pathogens. Unsurprisingly current findings support that the steroid phytohormone signaling components, including BRI1 , BIK1 , and SOBIR1 , are involved in regulating basal defense against other pathogens while contributing to various aspects of plant growth, light responses, and development ( Yu et al, 2018 ).…”

Section: Discussionmentioning

confidence: 53%

Hormone Signaling and Its Interplay With Development and Defense Responses in Verticillium-Plant Interactions

et al. 2020

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Soilborne plant pathogenic species in the fungal genus Verticillium cause destructive Verticillium wilt disease on economically important crops worldwide. Since R gene-mediated resistance is only effective against race 1 of V. dahliae , fortification of plant basal resistance along with cultural practices are essential to combat Verticillium wilts. Plant hormones involved in cell signaling impact defense responses and development, an understanding of which may provide useful solutions incorporating aspects of basal defense. In this review, we examine the current knowledge of the interplay between plant hormones, salicylic acid, jasmonic acid, ethylene, brassinosteroids, cytokinin, gibberellic acid, auxin, and nitric oxide, and the defense responses and signaling pathways that contribute to resistance and susceptibility in Verticillium -host interactions. Though we make connections where possible to non-model systems, the emphasis is placed on Arabidopsis - V. dahliae and V. longisporum interactions since much of the research on this interplay is focused on these systems. An understanding of hormone signaling in Verticillium -host interactions will help to determine the molecular basis of Verticillium wilt progression in the host and potentially provide insight on alternative approaches for disease management.

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Section: Discussionmentioning

confidence: 53%

Hormone Signaling and Its Interplay With Development and Defense Responses in Verticillium-Plant Interactions

et al. 2020

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“…Related to developmental processes in Arabidopsis, HAESA (HAE) and HAESA-LIKE 2 (HSL2) function upstream of the MKK4/ MKK5-MPK3/MPK6 module to regulate floral abscission and lateral root emergence (Cho et al, 2008;Zhu et al, 2019) and, for stomata development, ERECTA family members, SOMATIC EMBRYOGENESIS RECEPTOR KINASEs (SERKs) and TOO MANY MOUTHS (TMM) form a receptor complex that activates-upon ligand perception-the YDA-MKK4/MKK5-MPK3/MPK6 module, which leads to phosphorylation of the transcription factor SPEECHLESS (SPCH) (Lau and Bergmann, 2012;Meng et al, 2015b) ( Figure 1A). With respect to biotic stress in Arabidopsis, FLAGELLIN-SENSITIVE 2 (FLS2) in a complex with BRASSINOSTEROID INSENSITIVE 1-ASSOCIATED KINASE 1 (BAK1) promotes the MAPKKK8-MKK1/2-MPK4 cascade and the receptor-like cytoplasmic kinase BRASSINOSTEROID-SIGNALING KINASE 1 (BSK1) directly associating with the FLS2-BAK1 complex, and the MAPKKK5-MKK4/MKK5-MPK3/MPK6 cascade controls the response to flg22 (Chinchilla et al, 2007;Sopena-Torres et al, 2018;Yan et al, 2018;Yu et al, 2018). In the context of abiotic stress in Arabidopsis, CALCIUM/CALMODULIN-REGULATED RECEPTOR-LIKE KINASE 1 (CRLK1) and CRLK2 are activated by both chilling and freezing temperatures, which leads to rapid MAPKKK8 activation and sequential activation of MKK1/2 and MPK4.…”

Section: The Canonical Mapk Signaling Modulementioning

confidence: 99%

Expanding the Mitogen-Activated Protein Kinase (MAPK) Universe: An Update on MAP4Ks

Pan

Smet

2020

Front. Plant Sci.

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Phosphorylation-mediated signaling cascades control plant growth and development or the response to stress conditions. One of the best studied signaling cascades is the one regulated by MITOGEN-ACTIVATED PROTEIN KINASEs (MAPKs). However, MITOGEN-ACTIVATED PROTEIN KINASE KINASE KINASE KINASEs (MAP4Ks) are hardly explored. Here, we will give a comprehensive overview of what is known about plant MAP4Ks and highlight some outstanding questions associated with this largely uncharacterized class of kinases in plants.

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“…Here, the increased ABA and SA level possibly indicates stress tolerance and SAR activities. In addition, BR confers pathogenesis related stress tolerance 60,75 , for example, exogenous BR substantially diminished the fungal-induced pathogenic attacks in potato 61,76 , whilst www.nature.com/scientificreports/ correlative impacts were also revealed in sugar beet, cucumber, rice and tomato etc 77 . Herein, we have found four up-regulated DEGs in the ET transduction pathways, suggesting preemptive role of ET in initial DB signaling during infection process 78 .…”

Section: Discussionmentioning

confidence: 99%

Transcriptomic analysis of Dubas bug (Ommatissus lybicus Bergevin) infestation to Date Palm

Khan

Asaf

Khan

et al. 2020

Sci Rep

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Date palm (Phoenix dactylifera L.) and its fruit possess sociocultural, health and economic importance in Middle East. The date palm plantations are prone to Dubas bug (DB; Ommatissus lybicus DeBergevin; Homoptera: Tropiduchidae) attacks that severely damages the tree's growth and reduces fruit production. However, the transcriptome related datasets are not known to understand how DB activates physiological and gene regulatory mechanisms during infestation. Hence, we performed RnA-Seq of leaf infected with or without DB to understand the molecular responses of date palm seedlings. Before doing that, we noticed that DB infestation significantly increase superoxide anion and malondialdehyde production to two-folds as compared to healthy control. Stress-responsive genes such as proline transporter 2, NADP-dependent glyceraldehyde and superoxide dismutase were found significantly upregulated in infected seedlings. The infection repercussions were also revealed by significantly higher contents of endogenous phytohormonal signaling of jasmonic acid (JA) and salicylic acid (SA) compared with control. These findings persuaded to dig out intrinsic mechanisms and gene regulatory networks behind DB infestation to date palm by RNA-Seq analysis. Transcriptome analysis revealed upregulation of 6,919 genes and down-regulation of 2,695 genes in leaf during the infection process. The differentially expressed genes were mostly belongs to cellular functions (calcium and MAPK), phytohormones (auxin, gibberellins, abscisic acid, JA and SA), and secondary metabolites (especially coumarinates and gossypol). the data showed that defense responses were aggravated by gene networks involved in hypersensitive responses (PAR1, RIN4, PBS1 etc.). in conclusion, the results revealed that date palm's leaf up-regulates both cellular and phytohormonal determinants, followed by intrinsic hypersensitive responses to counter infestation process by Dubas bug. Date palm (Phoenix dactylifera L.) is one of the oldest fruits crop and has played particularly important role in the culture, economy and well-being of the people of Arabian region 1. It is widely grown in arid and semi-arid region , and distributed across 24 countries 2. The fruit is an important part of dietary intake due to its significant nutritional values. Like other countries in Arabian Peninsula, there are more than 300 date palm cultivars in Oman-the 8th largest producers of date fruits. Although with improved breading and tissue culture technologies, highly resistant varieties are cultivated in oasis, however, still the tree is confronted with pathogenic and insect attacks, hence reducing its growth, yield and production 3,4. The literature shows that date palm fruit decline significantly due to the attack of Dubas bug (Ommatissus lybicus Bergevin, Homoptera: Tropiduchidae) in the Middle East and North Africa, which is considered a major pests 3-5. Dubas bug (DB) was identified by Blumberg for the first time in the Tigris-Euphrates River Valley. Later on, he claimed that DB spread from...

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Brassinosteroid Signaling in Plant–Microbe Interactions

Cited by 86 publications

References 99 publications

Hormone Signaling and Its Interplay With Development and Defense Responses in Verticillium-Plant Interactions

Hormone Signaling and Its Interplay With Development and Defense Responses in Verticillium-Plant Interactions

Expanding the Mitogen-Activated Protein Kinase (MAPK) Universe: An Update on MAP4Ks

Transcriptomic analysis of Dubas bug (Ommatissus lybicus Bergevin) infestation to Date Palm

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