Elevated gibberellin altered morphology, anatomical structure, and transcriptional regulatory networks of hormones in celery leaves

Duan, Ao-Qi; Feng, Kai; Liu, Jie-Xia; Feng, Qing; Xu, Zhihong; Xiong, Ai‐Sheng

doi:10.1007/s00709-019-01396-w

Cited by 7 publications

(2 citation statements)

References 39 publications

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“…This xylogenesis-promoting effect of GA is not restricted to woody species as it has also been described in carrot [ 27 ], cotton [ 64 ], or celery [ 65 ]. Indeed, xylem proliferation is suppressed in tomato mutants with altered GA signaling [ 66 ].…”

Section: Vegetative Developmentmentioning

confidence: 84%

Plant Development and Crop Yield: The Role of Gibberellins

Castro-Camba

Sánchez²,

Vidal³

et al. 2022

Plants

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Gibberellins have been classically related to a few key developmental processes, thus being essential for the accurate unfolding of plant genetic programs. After more than a century of research, over one hundred different gibberellins have been described. There is a continuously increasing interest in gibberellins research because of their relevant role in the so-called "Green Revolution", as well as their current and possible applications in crop improvement. The functions attributed to gibberellins have been traditionally restricted to the regulation of plant stature, seed germination, and flowering. Nonetheless, research in the last years has shown that these functions extend to many other relevant processes. In this review, the current knowledge on gibberellins homeostasis and mode of action is briefly outlined, while specific attention is focused on the many different responses in which gibberellins take part. Thus, those genes and proteins identified as being involved in the regulation of gibberellin responses in model and non-model species are highlighted. The present review aims to provide a comprehensive picture of the state-of-the-art perception of gibberellins molecular biology and its effects on plant development. This picture might be helpful to enhance our current understanding of gibberellins biology and provide the know-how for the development of more accurate research and breeding programs.

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Section: Vegetative Developmentmentioning

confidence: 84%

Plant Development and Crop Yield: The Role of Gibberellins

Castro-Camba

Sánchez²,

Vidal³

et al. 2022

Plants

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“…In A. graveolens , 12 lignin synthesis gene expression profiles changed with an increase in the GA concentration and GA biosynthesis genes, including AgKO , AgKAO , AgGA20ox1 , AgGA20ox2 , AgGA3ox1 , AgGA2ox1 , and AgGA2ox3 . Contrastingly, the AgKS and AgGA2ox2 expression was reduced with an increase and change in the GA biosynthesis genes and bioactive GAs as well as the lignin synthesis gene, demonstrating that lignin might be correlated with leafy head formation [ 105 , 112 ]. The increased synthesis activity of GA20ox1 with the reduced inactivation activity of GA2ox1 to encode enzymes resulted in the final level of bioactive GAs, including GA 1 and GA 4.…”

Section: Gas Regulate Leaf Developmentmentioning

confidence: 99%

The Roles of Gibberellins in Regulating Leaf Development

Ritonga

Zhou

Zhang

et al. 2023

Plants

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Plant growth and development are correlated with many aspects, including phytohormones, which have specific functions. However, the mechanism underlying the process has not been well elucidated. Gibberellins (GAs) play fundamental roles in almost every aspect of plant growth and development, including cell elongation, leaf expansion, leaf senescence, seed germination, and leafy head formation. The central genes involved in GA biosynthesis include GA20 oxidase genes (GA20oxs), GA3oxs, and GA2oxs, which correlate with bioactive GAs. The GA content and GA biosynthesis genes are affected by light, carbon availability, stresses, phytohormone crosstalk, and transcription factors (TFs) as well. However, GA is the main hormone associated with BR, ABA, SA, JA, cytokinin, and auxin, regulating a wide range of growth and developmental processes. DELLA proteins act as plant growth suppressors by inhibiting the elongation and proliferation of cells. GAs induce DELLA repressor protein degradation during the GA biosynthesis process to control several critical developmental processes by interacting with F-box, PIFS, ROS, SCLl3, and other proteins. Bioactive GA levels are inversely related to DELLA proteins, and a lack of DELLA function consequently activates GA responses. In this review, we summarized the diverse roles of GAs in plant development stages, with a focus on GA biosynthesis and signal transduction, to develop new insight and an understanding of the mechanisms underlying plant development.

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