Abscisic acid-triggered guard cell l-cysteine desulfhydrase function and in situ hydrogen sulfide production contributes to heme oxygenase-modulated stomatal closure
文献类型： 外文期刊
作者： Zhang, Jing 1 ; Zhou, Mingjian 1 ; Ge, Zhenglin 1 ; Shen, Jie 1 ; Zhou, Can 1 ; Gotor, Cecilia 2 ; Romero, Luis C. 2 ; Du 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Life Sci, Lab Ctr Life Sci, Nanjing 210095, Jiangsu, Peoples R China
2.CSIC, Inst Bioquim Vegetal & Fotosintesis, Seville, Spain
3.Univ Seville, Seville, Spain
4.Qingdao Agr Univ, Key Lab Plant Biotechnol Univ Shandong Prov, Life Sci Coll, Qingdao, Shandong, Peoples R China
5.Minist Sci & Technol, Jiangsu Key Lab Food Qual & Safety State Key Lab, Nanjing, Jiangsu, Peoples R China
6.Minist Agr & Rural Affairs, Key Lab Control Technol & Stand Agroprod Safety &, Nanjing, Jiangsu, Peoples R China
7.Jiangsu Acad Agr Sci, Inst Food Safety & Nutr, Nanjing, Jiangsu, Peoples R China
关键词： DES1; HY1; hydrogen sulfide
期刊名称：PLANT CELL AND ENVIRONMENT （ 影响因子：7.228； 五年影响因子：7.791 ）
ISSN： 0140-7791
年卷期： 2020 年 43 卷 3 期
页码：
收录情况： SCI
摘要： Recent studies have demonstrated that hydrogen sulfide (H2S) produced through the activity of l-cysteine desulfhydrase (DES1) is an important gaseous signaling molecule in plants that could participate in abscisic acid (ABA)-induced stomatal closure. However, the coupling of the DES1/H2S signaling pathways to guard cell movement has not been thoroughly elucidated. The results presented here provide genetic evidence for a physiologically relevant signaling pathway that governs guard cell in situ DES1/H2S function in stomatal closure. We discovered that ABA-activated DES1 produces H2S in guard cells. The impaired guard cell ABA phenotype of the des1 mutant can be fully complemented when DES1/H2S function has been specifically rescued in guard cells and epidermal cells, but not mesophyll cells. This research further characterized DES1/H2S function in the regulation of LONG HYPOCOTYL1 (HY1, a member of the heme oxygenase family) signaling. ABA-induced DES1 expression and H2S production are hyper-activated in the hy1 mutant, both of which can be fully abolished by the addition of H2S scavenger. Impaired guard cell ABA phenotype of des1/hy1 can be restored by H2S donors. Taken together, this research indicated that guard cell in situ DES1 function is involved in ABA-induced stomatal closure, which also acts as a pivotal hub in regulating HY1 signaling.
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