Research Progress on Factors and Molecular Mechanisms Regulating Plant Organ Abscission

doi:10.11983/CBB24133

Abstract

Abstract: The organs abscission is a phenomenon in which parts of organs are separated from the body. It is an adaptive strategy evolved by plants in the process of growth and response to environmental changes, which ensures the normal growth and adaptation of plants to the environment. This process involves the abscission zone formation, signal activation, cell separation, and is regulated by both internal (in vivo) physiological processes and external environmental factors including light, temperature, and humidity. In agricultural production, the abscission of plant organs directly affects crop yield. Understanding the regulatory mechanisms of plant organ abscission is greatly important for improving crop yield. In recent years, tremendous progress has been made in the study of organ abscission mechanisms. The studies showed that the mechanisms of organ abscission in plants are largely conservative between species, but also with significant variations. This review delved into the physiological and biochemical mechanisms of plant organ abscission, and summarized the effects of both the environmental factors and the hormones and enzymes in the process. The review provides a solid theoretical support and practical guidance for crop genetic breeding and agricultural production improvement in connection with organ abscission.

Key words: organ abscission, abscission zone, molecular mechanism, enzyme, phytohormone

Liu Xupeng, Wang Min, Han Shou'an, Zhu Xuehui, Wang Yanmeng, Pan Mingqi, Zhang Wen. Research Progress on Factors and Molecular Mechanisms Regulating Plant Organ Abscission[J]. Chinese Bulletin of Botany, 2025, 60(3): 472-482.

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URL: https://www.chinbullbotany.com/EN/10.11983/CBB24133

https://www.chinbullbotany.com/EN/Y2025/V60/I3/472

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References 88

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基因名称
qSH1	Os01g0848400	BEL1型同源异型蛋白	1	Konishi et al., 2006
OsSh1	Os03g0650000	YABBY转录因子	3	Lin et al., 2012
ObSH3	OBART03G27740	YABBY转录因子	3	Lv et al., 2018
Sh4/SHA1	Os04g0670900	Myb3转录因子	4	Li et al., 2006; Lin et al., 2007
SHAT1	Os04g0649100	AP2转录因子	4	Zhou et al., 2012
SH5	Os05g0455200	BEL1型同源异型蛋白	5	Yoon et al., 2014
Sh-h/OsCPL1	Os07g0207700	CTD磷酸化酶	7	Ji et al., 2010
OsGRF4/PT2	Os02g0701300	生长调控因子	2	Sun et al., 2016
OsNPC1	Os03g0826600	磷酸酯酶C1	3	Cao et al., 2016
GL4	ORGLA04G0254300	Myb3转录因子	4	Wu et al., 2017
OsLG1	Os04g0656500	SQUAMOSA启动子结合蛋白	4	Lee et al., 2007; Ishii et al., 2013
SSH1	Os07g0235800	AP2转录因子	7	Jiang et al., 2019

基因名称
qSH1	Os01g0848400	BEL1型同源异型蛋白	1	Konishi et al., 2006
OsSh1	Os03g0650000	YABBY转录因子	3	Lin et al., 2012
ObSH3	OBART03G27740	YABBY转录因子	3	Lv et al., 2018
Sh4/SHA1	Os04g0670900	Myb3转录因子	4	Li et al., 2006; Lin et al., 2007
SHAT1	Os04g0649100	AP2转录因子	4	Zhou et al., 2012
SH5	Os05g0455200	BEL1型同源异型蛋白	5	Yoon et al., 2014
Sh-h/OsCPL1	Os07g0207700	CTD磷酸化酶	7	Ji et al., 2010
OsGRF4/PT2	Os02g0701300	生长调控因子	2	Sun et al., 2016
OsNPC1	Os03g0826600	磷酸酯酶C1	3	Cao et al., 2016
GL4	ORGLA04G0254300	Myb3转录因子	4	Wu et al., 2017
OsLG1	Os04g0656500	SQUAMOSA启动子结合蛋白	4	Lee et al., 2007; Ishii et al., 2013
SSH1	Os07g0235800	AP2转录因子	7	Jiang et al., 2019