Sugar status in preexisting leaves determines systemic stomatal development within newly developing leaves

	Sugar status in preexisting leaves determines systemic stomatal development within newly developing leaves
	Bao, QX; Mu, XR; Tong, C; Li, C; Tao, WZ; Zhao, ST; Liu, YX; Wang, WN; Wei, YT; Yu, FH; Wang, JW; Sun, ZL; Fan, BL; Sun, J; Wang, C; Loake, GJ; Meng, LS; Baulcombe, D
	2023
发表期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN	0027-8424
卷号	120 期号:24
摘要	Stomata are pores found in the epidermis of stems or leaves that modulate both plant gas exchange and water/nutrient uptake. The development and function of plant stomata are regulated by a diverse range of environmental cues. However, how carbohydrate status in preexisting leaves might determine systemic stomatal formation within newly developing leaves has remained obscure. The glucose (Glc) sensor HEXOKINASE1 (HXK1) has been reported to decrease the stability of an ethylene/Glc signaling transcriptional regulator, EIN3 (ETHYLENE INSENSITIVE3). EIN3 in turn directly represses the expression of SUC2 (sucrose transporter 2), encoding a master transporter of sucrose (Suc). Further, KIN10, a nuclear regulator involved in energy homeostasis, has been reported to repress the transcription factor SPCH (SPEECHLESS), a master regulator of stomatal development. Here, we demonstrate that the Glc status of preexisting leaves determines systemic stomatal development within newly developing leaves by the HXK1-:EIN3-:SUC2 module. Further, increasing Glc levels in preexisting leaves results in a HXK1-dependent decrease of EIN3 and increase of SUC2, triggering the perception, amplification and relay of HXK1-dependent Glc signaling and thereby triggering Suc transport from mature to newly developing leaves. The HXK1-:EIN3-:SUC2 molecular module thereby drives systemic Suc transport from preexisting leaves to newly developing leaves. Subsequently, increasing Suc levels within newly developing leaves promotes stomatal formation through the established KIN10 ⟶ SPCH module. Our findings thus show how a carbohydrate signal in preexisting leaves is sensed, amplified and relayed to determine the extent of systemic stomatal development within newly developing leaves.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.kiz.ac.cn/handle/152453/14411
专题	管理、支撑部门_公共技术服务中心
推荐引用方式 GB/T 7714	Bao, QX,Mu, XR,Tong, C,et al. Sugar status in preexisting leaves determines systemic stomatal development within newly developing leaves[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2023,120(24).
APA	Bao, QX.,Mu, XR.,Tong, C.,Li, C.,Tao, WZ.,...&Baulcombe, D.(2023).Sugar status in preexisting leaves determines systemic stomatal development within newly developing leaves.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,120(24).
MLA	Bao, QX,et al."Sugar status in preexisting leaves determines systemic stomatal development within newly developing leaves".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 120.24(2023).

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