Involvement of reactive oxygen species and auxin in serotonin-induced inhibition of primary root elongation

CORC > 西双版纳热带植物园 > 中国科学院西双版纳热带植物园 > 2012年后新成立研究组

	Involvement of reactive oxygen species and auxin in serotonin-induced inhibition of primary root elongation
	Wan, Jinpeng; Zhang, Ping; Sun, Liangliang; Li, Shuang; Wang, Ruling; Zhou, Huakun; Wang, Wenying; Xu, Jin; Xu, J (reprint author), Chinese Acad Sci, CAS Key Lab Trop Plant Resources & Sustainable Us, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China.
刊名	JOURNAL OF PLANT PHYSIOLOGY
	2018
卷号	229 期号:x 页码:89-99
关键词	Serotonin Auxin Reactive Oxygen Species Primary Root Growth Arabidopsis Thaliana
ISSN号	0176-1617
英文摘要	The well-known neurotransmitter 5-hydroxytryptamine (serotonin) not only regulates sleep and mood in humans and animals but may also play important roles in modulating growth, development, and defense responses, such as seed germination, flowering, and abiotic stress tolerance, in plants. Serotonin inhibits primary root (PR) growth; however, the physiological and molecular mechanisms underlying serotonin-mediated PR growth inhibition remain largely unclear. Here, we investigate the effects of serotonin on root growth and development in Arabidopsis. Serotonin inhibits PR elongation by affecting both the meristem and elongation zones. In the meristem zone, serotonin represses both meristem cell division potential and stem cell niche activity. Serotonin induces H2O2 overaccumulation in the elongation zone and reduces O-2- accumulation in the meristem zone by a UPB1 pathway, thereby disrupting reactive oxygen species (ROS) equilibrium in root tips, thus resulting in PR growth inhibition. Serotonin also regulates auxin distribution in root tips by decreasing auxin-related gene expression and repressing auxin transport through modulation of AUX1 and PIN2 abundances in root tips. Taken together, our data indicate that high concentrations of serotonin result in stress responses in plants by inhibiting PR elongation through the regulation of H2O2 and O-2- distribution in PR tips and through an auxin pathway via the repression of auxin biosynthesis and transport.
学科主题	Plant Sciences
URL标识	查看原文
语种	英语
公开日期	2018-09-05
内容类型	期刊论文
源URL	[http://ir.xtbg.org.cn/handle/353005/10987]
专题	西双版纳热带植物园_2012年后新成立研究组
通讯作者	Xu, Jin; Xu, J (reprint author), Chinese Acad Sci, CAS Key Lab Trop Plant Resources & Sustainable Us, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China.
推荐引用方式 GB/T 7714	Wan, Jinpeng,Zhang, Ping,Sun, Liangliang,et al. Involvement of reactive oxygen species and auxin in serotonin-induced inhibition of primary root elongation[J]. JOURNAL OF PLANT PHYSIOLOGY,2018,229(x):89-99.
APA	Wan, Jinpeng.,Zhang, Ping.,Sun, Liangliang.,Li, Shuang.,Wang, Ruling.,...&Xu, J .(2018).Involvement of reactive oxygen species and auxin in serotonin-induced inhibition of primary root elongation.JOURNAL OF PLANT PHYSIOLOGY,229(x),89-99.
MLA	Wan, Jinpeng,et al."Involvement of reactive oxygen species and auxin in serotonin-induced inhibition of primary root elongation".JOURNAL OF PLANT PHYSIOLOGY 229.x(2018):89-99.