IbBBX24 Promotes the Jasmonic Acid Pathway and Enhances Fusarium Wilt Resistance in Sweet Potato

Zhang, Huan; Zhang, Qian; Zhai, Hong; Gao, Shaopei; Yang, Li; Wang, Zhen; Xu, Yuetong; Huo, Jinxi; Ren, Zhitong; Zhao, Ning; Wang, Xiangfeng; Li, Jigang; Liu, Qingchang; He, Shaozhen

doi:10.1105/tpc.19.00641

Cited by 73 publications

(77 citation statements)

References 136 publications

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“…The expression of a banana gene, MaCOL1 , increased after infection by Colletotrichum musae [ 95 ]. Overexpression of IbBBX24 gene significantly increased Fusarium wilt disease resistance in cultivated sweet potatoes [ 96 ].…”

Section: Involvement Of the Bbx Proteins In Stress Response And Homentioning

confidence: 99%

Beyond Arabidopsis: BBX Regulators in Crop Plants

Talar

Kiełbowicz-Matuk

2021

IJMS

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B-box proteins represent diverse zinc finger transcription factors and regulators forming large families in various plants. A unique domain structure defines them—besides the highly conserved B-box domains, some B-box (BBX) proteins also possess CCT domain and VP motif. Based on the presence of these specific domains, they are mostly classified into five structural groups. The particular members widely differ in structure and fulfill distinct functions in regulating plant growth and development, including seedling photomorphogenesis, the anthocyanins biosynthesis, photoperiodic regulation of flowering, and hormonal pathways. Several BBX proteins are additionally involved in biotic and abiotic stress response. Overexpression of some BBX genes stimulates various stress-related genes and enhanced tolerance to different stresses. Moreover, there is evidence of interplay between B-box and the circadian clock mechanism. This review highlights the role of BBX proteins as a part of a broad regulatory network in crop plants, considering their participation in development, physiology, defense, and environmental constraints. A description is also provided of how various BBX regulators involved in stress tolerance were applied in genetic engineering to obtain stress tolerance in transgenic crops.

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Section: Involvement Of the Bbx Proteins In Stress Response And Homentioning

confidence: 99%

Beyond Arabidopsis: BBX Regulators in Crop Plants

Talar

Kiełbowicz-Matuk

2021

IJMS

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“…The RST domain is required for the interaction with ZmPL1 or AtPAP1 (Figure 6b,f). Nicotiana benthamiana is a useful model system for transiently expressing proteins at high levels and is a vital tool for understanding protein-protein interactions in vivo (Gou et al, 2011;Zhang et al, 2020a). In this study, a protein-protein co-immunoprecipitation (Co-IP) assay and a split-luciferase complementation ) Relative fresh weights of seedlings exposed to: (d) 7 lM MV or (g) 200 mM NaCl for 4 days, compared with seedlings before stress treatment.…”

Section: Zmsro1e Interacts With Zmpl1 To Disturb the Formation Of Thementioning

confidence: 99%

Maize SRO1e represses anthocyanin synthesis through regulating the MBW complex in response to abiotic stress

et al. 2020

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Plants experiencing abiotic stress react by generating reactive oxygen species (ROS), compounds that, if allowed to accumulate to excess, repress plant growth and development. Anthocyanins induced by abiotic stress are strong antioxidants that neutralize ROS, whereas their over-accumulation retards plant growth. Although the mechanism of anthocyanin synthesis has been revealed, how plants balance anthocyanin synthesis under abiotic stress to maintain ROS homeostasis is unknown. Here, ROS-related proteins, SIMILAR TO RCD-ONEs (SROs), were analysed in Zea mays (maize), and all six SRO1 genes were inducible by a variety of abiotic stress agents. The constitutive expression of one of these genes, ZmSRO1e, in maize as well as in Arabidopsis thaliana increased the sensitivity of the plant to abiotic stress, but repressed anthocyanin biosynthesis and ROS scavenging activity. Loss-of-function mutation of ZmSRO1e enhanced ROS tolerance and anthocyanin accumulation. We showed that ZmSRO1e competed with ZmR1 (a core basic helix-loop-helix subunit of the MYB-bHLH-WD40 transcriptional activation complex) for binding with ZmPL1 (a core MYB subunit of the complex). Thus, during the constitutive expression of ZmSRO1e, the formation of the complex was compromised, leading to the repression of genes, such as ZmA4 (encoding dihydroflavonol reductase), associated with anthocyanin synthesis. Overall, the results have revealed a mechanism that allows the products of maize SRO1e to participate in the abiotic stress response.

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“…Most studies have focused on the role of BBX proteins in the regulation of photomorphogenesis of Arabidopsis seedlings, involving positive regulators BBX4, BBX20, BBX21, BBX22 and BBX23 as well as negative regulators BBX18, BBX19, BBX24, BBX25, BBX28, BBX30, BBX31 and BBX32 (Holm et al ., 2001; Datta et al ., 2006, 2007, 2008; Indorf et al ., 2007; Chang et al ., 2008; Kumagai et al ., 2008; Khanna et al ., 2009; Holtan et al ., 2011; Wang et al ., 2011, 2015; Fan et al ., 2012; Gangappa et al ., 2013; Wei et al ., 2016; Zhang et al ., 2017; Lin et al ., 2018; D. Xu et al ., 2018; Heng et al ., 2019; Yadav et al ., 2019). BBX proteins are also involved in regulating thermomorphogenesis (Ding et al ., 2018), flowering (Putterill et al ., 1995; Robson et al ., 2001; Valverde et al ., 2004; Cheng & Wang, 2005; Kim et al ., 2008; Hassidim et al ., 2009; Lee et al ., 2010; Yang et al ., 2014; Ping et al ., 2019), shade avoidance response (Crocco et al ., 2010, 2015; H. Wang et al ., 2013), anthocyanin accumulation (An et al ., 2019, 2020b; Bai et al ., 2019; Fang et al ., 2019), carotenoid biosynthesis (Xiong et al ., 2019), leaf senescence (Y. Liu et al ., 2019), and biological and abiotic stress responses (Liu et al ., 2012; X. Liu et al ., 2019; Q. Wang et al ., 2013; Min et al ., 2014; Chu et al ., 2016; Zhang et al ., 2020). However, no reports have been published that demonstrate the involvement of BBX proteins in cold stress tolerance.…”

Section: Introductionmentioning

confidence: 99%

Apple B‐box protein BBX37 regulates jasmonic acid mediated cold tolerance through the JAZ‐BBX37‐ICE1‐CBF pathway and undergoes MIEL1‐mediated ubiquitination and degradation

et al. 2020

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Summary The plant hormone jasmonic acid (JA) is involved in the cold stress response, and the inducer of CBF expression 1 (ICE1)‐ C‐repeat binding factor (CBF) regulatory cascade plays a key role in the regulation of cold stress tolerance. In this study, we showed that a novel B‐box (BBX) protein MdBBX37 positively regulates JA‐mediated cold‐stress resistance in apple. We found that MdBBX37 bound to the MdCBF1 and MdCBF4 promoters to activate their transcription, and also interacted with MdICE1 to enhance the transcriptional activity of MdICE1 on MdCBF1, thus promoting its cold tolerance. Two JA signaling repressors, MdJAZ1 and MdJAZ2 (JAZ, JAZMONATE ZIM‐DOMAIN), interacted with MdBBX37 to repress the transcriptional activity of MdBBX37 on MdCBF1 and MdCBF4, and also interfered with the interaction between MdBBX37 and MdICE1, thus negatively regulating JA‐mediated cold tolerance. E3 ligase MdMIEL1 (MIEL1, MYB30‐Interacting E3 Ligase1) reduced MdBBX37‐improved cold resistance by mediating ubiquitination and degradation of the MdBBX37 protein. The data reveal that MIEL1 and JAZ proteins co‐regulate JA‐mediated cold stress tolerance through the BBX37‐ICE1‐CBF module in apple. These results will aid further examination of the post‐translational modification of BBX proteins and the regulatory mechanism of JA‐mediated cold stress tolerance.

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IbBBX24 Promotes the Jasmonic Acid Pathway and Enhances Fusarium Wilt Resistance in Sweet Potato

Cited by 73 publications

References 136 publications

Beyond Arabidopsis: BBX Regulators in Crop Plants

Beyond Arabidopsis: BBX Regulators in Crop Plants

Maize SRO1e represses anthocyanin synthesis through regulating the MBW complex in response to abiotic stress

Apple B‐box protein BBX37 regulates jasmonic acid mediated cold tolerance through the JAZ‐BBX37‐ICE1‐CBF pathway and undergoes MIEL1‐mediated ubiquitination and degradation

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