The auxin response factor, <scp>OsARF</scp>19, controls rice leaf angles through positively regulating <scp>OsGH</scp>3‐5 and <scp>OsBRI</scp>1

Zhang, SaiNa; Wang, Suikang; Xu, Yan-Xia; Yu, Chenliang; Shen, Chenjia; Qian, Qian; Geisler, Markus; Jiang, De An; Qi, Yanhua

doi:10.1111/pce.12397

Cited by 170 publications

(177 citation statements)

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“…The parenchyma cells are living cells with plasticity, and the number of them at the adaxial side is the main factor determining leaf inclination. Indeed, altered parenchyma cell numbers or size lead to the altered leaf angle (Zhao et al, 2013;Zhang et al, 2015).…”

Section: Cytology During Lamina Joint Developmentmentioning

confidence: 99%

“…Deficiency of lamina joint structure (Lee et al, 2007), suppressed longitudinal elongation of adaxial parenchyma cells, and increased division of abaxial sclerenchyma cells of the lamina joint (Zhang et al, 2009a;Sun et al, 2015) result in leaf erectness. Conversely, increased expansion or proliferation of adaxial parenchyma cells leads to increased leaf inclination (Zhao et al, 2010(Zhao et al, , 2013Zhang et al, 2015). Abnormal vascular bundle formation and cell wall composition also result in changed leaf angle (Ning et al, 2011).…”

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confidence: 99%

“…Overexpression of miR393a/b, which suppresses the expression of OsAFB2 or OsTIR1, leads to the enlarged inclination of flag leaf (Bian et al, 2012). Transgenic rice overexpressing OsARF19 shows enlarged leaf inclination due to the increased expression level of GH3s and the decreased free IAA content (Zhang et al, 2015), and overexpression of OsIAA1 results in the increased leaf angle (Song et al, 2009), suggesting the negative effects of auxin in leaf inclination. Interestingly, most auxin-related mutants present changed BR sensitivity (Song et al, 2009;Zhao et al, 2013;Zhang et al, 2015), and the inclination by treatment with brassinolide alone is suppressed by an inhibitor of IAA transport (Cao and Chen, 1995) or promoted by additional IAA (Han et al, 1997), suggesting a complex regulation of phytohormones in lamina joint development.…”

mentioning

confidence: 99%

“…Transgenic rice overexpressing OsARF19 shows enlarged leaf inclination due to the increased expression level of GH3s and the decreased free IAA content (Zhang et al, 2015), and overexpression of OsIAA1 results in the increased leaf angle (Song et al, 2009), suggesting the negative effects of auxin in leaf inclination. Interestingly, most auxin-related mutants present changed BR sensitivity (Song et al, 2009;Zhao et al, 2013;Zhang et al, 2015), and the inclination by treatment with brassinolide alone is suppressed by an inhibitor of IAA transport (Cao and Chen, 1995) or promoted by additional IAA (Han et al, 1997), suggesting a complex regulation of phytohormones in lamina joint development. In addition, BR-induced leaf inclination is accompanied by ethylene production and inhibited by an inhibitor of 1-aminocyclopropane-1-carboxylic acid oxidase (Cao and Chen, 1995) or suppressed by treatment with abscisic acid (ABA) and gibberellin (GA) (Han et al, 1997;Tong et al, 2014), further indicating that phytohormones synergistically and antagonistically regulate lamina joint development and leaf inclination.…”

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confidence: 99%

“…Auxin homeostasis and signaling regulate leaf inclination, and gain-of-function mutants or transgenic plants overexpressing GH3 family members, including OsGH3-1, OsGH3-2, OsGH3-5, and OsGH3-13, present reduced auxin levels and enlarged leaf angles (Zhang et al, 2009b(Zhang et al, , 2015Du et al, 2012;Zhao et al, 2013). Overexpression of miR393a/b, which suppresses the expression of OsAFB2 or OsTIR1, leads to the enlarged inclination of flag leaf (Bian et al, 2012).…”

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confidence: 99%

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Dynamic Cytology and Transcriptional Regulation of Rice Lamina Joint Development

2017

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Rice (Oryza sativa) leaf angle is determined by lamina joint and is an important agricultural trait determining leaf erectness and, hence, the photosynthesis efficiency and grain yield. Genetic studies reveal a complex regulatory network of lamina joint development; however, the morphological changes, cytological transitions, and underlying transcriptional programming remain to be elucidated. A systemic morphological and cytological study reveals a dynamic developmental process and suggests a common but distinct regulation of the lamina joint. Successive and sequential cell division and expansion, cell wall thickening, and programmed cell death at the adaxial or abaxial sides form the cytological basis of the lamina joint, and the increased leaf angle results from the asymmetric cell proliferation and elongation. Analysis of the gene expression profiles at four distinct developmental stages ranging from initiation to senescence showed that genes related to cell division and growth, hormone synthesis and signaling, transcription (transcription factors), and protein phosphorylation (protein kinases) exhibit distinct spatiotemporal patterns during lamina joint development. Phytohormones play crucial roles by promoting cell differentiation and growth at early stages or regulating the maturation and senescence at later stages, which is consistent with the quantitative analysis of hormones at different stages. Further comparison with the gene expression profile of leaf inclination1, a mutant with decreased auxin and increased leaf angle, indicates the coordinated effects of hormones in regulating lamina joint. These results reveal a dynamic cytology of rice lamina joint that is fine-regulated by multiple factors, providing informative clues for illustrating the regulatory mechanisms of leaf angle and plant architecture.

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Section: Cytology During Lamina Joint Developmentmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Dynamic Cytology and Transcriptional Regulation of Rice Lamina Joint Development

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The ARF Side of the Fruit Tuning of Flesh Fruit Development and Ripening

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Quercetin‐mediated regulation of signal transduction cascades and microRNAs: Natural weapon against cancer

Farooqı

Jabeen

Attar

et al. 2018

J of Cellular Biochemistry

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Recent technological and analytical breakthroughs in genomics and proteomics have deepened our understanding related to the multifaceted nature of cancer. Because of therapeutically challenging nature of cancer, there has been a renewed interest in phytochemistry, and much attention is currently being given to the identification of signaling pathway inhibitors. Data obtained through high-throughput technologies has provided a broader landscape of wiring maps of complex oncogenic signaling networks, thus revealing novel therapeutic opportunities. Increasingly, it is being realized that although our knowledge related to physiological and pathophysiological roles of signal transduction cascades has evolved rapidly, the clinical development of signaling pathway inhibitors has been challenging. Quercetin has attracted considerable attention because of its amazingly high pharmacological value. Research over decades has sequentially shown that quercetin effectively inhibited cancer development and progression. In this review, we have attempted to set the spotlight on the regulation of different cell signaling pathways by quercetin. We partition this multicomponent review into how quercetin effectively regulates the Wnt/β-catenin pathway, Janus kinase-signal transducer and activator of transcription pathway, and vascular endothelial growth factor/vascular endothelial growth factor receptor signaling cascade in different types of cancers. We also provide an overview of the regulation of NOTCH and SHH pathways by quercetin. MicroRNAs (miRNAs) have also emerged as versatile regulators of cancer, and contemporary studies have shed light on the ability of quercetin to control different miRNAs in various cancers. We have scattered information related to NOTCH and SHH pathways, and future studies must converge on the investigation of these pathways to see how quercetin modulates the signaling machinery of these pathways.

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The auxin response factor, OsARF19, controls rice leaf angles through positively regulating OsGH3‐5 and OsBRI1

Abstract: ABSTRACT

Cited by 170 publications

References 67 publications

Dynamic Cytology and Transcriptional Regulation of Rice Lamina Joint Development

Dynamic Cytology and Transcriptional Regulation of Rice Lamina Joint Development

The ARF Side of the Fruit Tuning of Flesh Fruit Development and Ripening

Quercetin‐mediated regulation of signal transduction cascades and microRNAs: Natural weapon against cancer

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