Integrated Regulation of Apical Hook Development by Transcriptional Coupling of EIN3/EIL1 and PIFs in Arabidopsis

Zhang, Xing; Ji, Yusi; Xue, Chang; Ma, Honghao; Yu-bao, XI; Huang, Peixin; Wang, Huan; An, Fengying; Li, Bosheng; Wang, Yichuan; Guo, Haiyang

doi:10.1105/tpc.18.00018

Cited by 75 publications

(121 citation statements)

References 62 publications

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“…Initial induction of FLS2 / EFR during seedling development coincides with gradual downregulation of the transcriptional repressors TOE1/TOE2, which is mediated by MAMP‐inducible miRNA172 that is progressively induced with seedling age (Zou et al ., ). When dicotyledonous seedlings protrude the soil, ethylene promotes apical hook formation to protect the fragile shoot apical meristem, in part via PIFs that suppress defense‐related genes (X. Zhang et al ., ). Ethylene also contributes to FLS2 expression and defense signaling downstream of the receptor (Boutrot et al ., ; Tintor et al ., ).…”

Section: Environmental Effects On Plant Immunitymentioning

confidence: 99%

Plant immunity in signal integration between biotic and abiotic stress responses

2019

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Summary Plants constantly monitor and cope with the fluctuating environment while hosting a diversity of plant‐inhabiting microbes. The mode and outcome of plant–microbe interactions, including plant disease epidemics, are dynamically and profoundly influenced by abiotic factors, such as light, temperature, water and nutrients. Plants also utilize associations with beneficial microbes during adaptation to adverse conditions. Elucidation of the molecular bases for the plant–microbe–environment interactions is therefore of fundamental importance in the plant sciences. Following advances into individual stress signaling pathways, recent studies are beginning to reveal molecular intersections between biotic and abiotic stress responses and regulatory principles in combined stress responses. We outline mechanisms underlying environmental modulation of plant immunity and emerging roles for immune regulators in abiotic stress tolerance. Furthermore, we discuss how plants coordinate conflicting demands when exposed to combinations of different stresses, with attention to a possible determinant that links initial stress response to broad‐spectrum stress tolerance or prioritization of specific stress tolerance.

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Section: Environmental Effects On Plant Immunitymentioning

confidence: 99%

Plant immunity in signal integration between biotic and abiotic stress responses

2019

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“…Recent studies have revealed the molecular interactions among signaling nodes of multiple hormones and the leading environmental factor light during Arabidopsis apical hook development (Vandenbussche et al ., ; Wu et al ., ; Zadnikova et al ., ; Gallego‐Bartolome et al ., ; An et al ., ; Zhang et al ., , ; Beziat et al ., ; Dong et al ., ; Jonsson et al ., ; Shi et al ., ). The complexity of this signaling network is firstly featured by the coexistence of both synergistic (Gallego‐Bartolome et al ., ; An et al ., ) and antagonistic (Zhang et al ., , ) regulations. Second, different hormones, even working coordinately, exhibit both interdependent and independent modes of action (Gallego‐Bartolome et al ., ).…”

Section: Apical Hook Development Is a Spatio‐temporally Dynamic Procementioning

confidence: 99%

“…Further studies have revealed that HLS1 protein abundance increases after ethylene treatment and that HLS1 transcription is directly regulated by EIN3/EIL1 (Li et al ., ; An et al ., ). Interestingly, this direct regulation of HLS1 by EIN3/EIL1 also partly mediates the effect of gibberellin and jasmonate on apical hook development, through physical interactions of DELLA‐EIN3 and MYC2‐EIN3, respectively (An et al ., ; Song et al ., ; Zhang et al ., , ). Recently, Zhang et al .…”

Section: Central Players Of Apical Hook Development: Auxin and Hookless1mentioning

confidence: 99%

“…Recently, Zhang et al . () have demonstrated that HLS1 transcription is also directly activated by PIFs (PHYTOCHROME INTERACTING FACTORs) which, together with EIN3/EIL1, form a transcriptional couple that coregulates a selective set of genes, including HLS1 . This transcriptional coupling integratively mediates the effects of multiple hormones, such as ethylene, gibberellin and jasmonate, and environmental factors, such as light and mechanical pressure, on apical hook development (Fig.…”

Section: Central Players Of Apical Hook Development: Auxin and Hookless1mentioning

confidence: 99%

“…Restricted by manual measurement, the quantification of the Arabidopsis apical hook phenotype using current high‐throughput methods, however, exists almost exclusively at the organ level (Vandenbussche et al ., ; Zadnikova et al ., ; Gallego‐Bartolome et al ., ; Smet et al ., ; Zhu et al ., ; Zhang et al ., ). Subtle effects and the physiological relevance and molecular mechanisms of different hormones on the within‐organ level geometry of the hook, if any, have not been carefully evaluated.…”

Section: Towards a Cellular‐based Understanding Of Hormonal Regulatiomentioning

confidence: 99%

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On hormonal regulation of the dynamic apical hook development

Wang

Guo

2018

New Phytologist

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Summary To deal with the ever‐changing environment, sessile plants adapt diverse and plastic organ structures during postembryonic development. Among these, the apical hook forms shortly after seed germination of most dicots, and protects the delicate shoot meristem from mechanical damage during soil emergence. For decades, this structure has been taken as an excellent model for the investigation of the mechanisms underlying the differential growth of plant tissues. Here, we summarize recent advances in the investigation of the hormonal regulation of apical hook development, focusing on the convergence to auxin and a central regulator HOOKLESS1 (HLS1). We propose the revisitation of hook curvature kinematics at suborgan and single‐cell resolution, and further pursuance of the mechanistics of apical hook development through combinatorial approaches of automated imaging and multidimensional modeling.

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Transcriptional Switching of Host Defence Response to Combat Hemibiotrophic Fungal Infection

Abdullah

Bahari

Sakeh

2022

Annual Plant Reviews Online

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Hemibiotrophic fungal pathogens cause major destruction to food and industrial crops globally. Their dual infection phases appear to be a winning strategy. The pathogen establishes an initial colonisation biotrophically keeping the host cells alive. It then shifts to the notorious necrotrophic mode of infection, killing the host cells resulting in biochemical and physiological impairment destructive to the whole plant. A better understanding of the molecular interaction at the early stage of infection is critical to save the infected crops. In this article, we integrate findings from different plant–pathogen pathosystems to provide a comprehensive evaluation about the defence response network, covering crops that are infected through the aerial and root tissues. The high‐throughput transcriptomics and metabolomics approaches as well as relevant biochemical and physiological analyses have revealed key genes and cellular components associated with signalling pathways and defence responses during the biotrophic and necrotrophic phases. Factors influencing the biotrophy to necrotrophy transition are discussed. Transcriptional reprogramming involving key regulatory proteins acting as master or key transcription factors to provide an effective two‐stage defence network in host plants is also elaborated.

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Integrated Regulation of Apical Hook Development by Transcriptional Coupling of EIN3/EIL1 and PIFs in Arabidopsis

Cited by 75 publications

References 62 publications

Plant immunity in signal integration between biotic and abiotic stress responses

Plant immunity in signal integration between biotic and abiotic stress responses

On hormonal regulation of the dynamic apical hook development

Transcriptional Switching of Host Defence Response to Combat Hemibiotrophic Fungal Infection

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