干旱区生态环境知识资源中心(Arid): Alkanes (C29 and C31)-Mediated Intracuticular Wax Accumulation Contributes to Melatonin- and ABA-Induced Drought Tolerance in Watermelon

Arid

DOI	10.1007/s00344-020-10099-z
	Alkanes (C29 and C31)-Mediated Intracuticular Wax Accumulation Contributes to Melatonin- and ABA-Induced Drought Tolerance in Watermelon
	Li, Hao 1; Guo, Yanliang 1; Cui, Qi 1; Zhang, Zixing 1; Yan, Xing 1; Ahammed, Golam Jalal 2; Yang, Xiaozhen 1; Yang, Jianqiang 1; Wei, Chunhua 1; Zhang, Xian 1
通讯作者	Zhang, Xian
来源期刊	JOURNAL OF PLANT GROWTH REGULATION
ISSN	0721-7595
EISSN	1435-8107
出版年	2020
卷号	39 期号:4 页码:1441-1450
英文摘要	As the outermost hydrophobic layer, cuticular waxes serve as an essential waterproof barrier to protect plants from desiccation, but the mechanism of wax accumulation still remains unclear. We analyzed the response of cuticular wax composition and deposition to drought in three different watermelon germplasms, namely, M20, M08, and J5F, which showed similar stomatal response, but high, moderate, and low tolerance to drought, respectively. Among the identified 28 compounds of cuticular waxes on leaves, more alkanes with chain lengths of C29 and C31 were induced in M20, accompanied by an increased transcript levels of CER1 (very-long-chain aldehyde decarbonylase 1), when compared to that in M08 and J5F. M20 showed higher total wax amount but fewer platelet-like wax crystals on the upper epidermis of leaves under drought, suggesting the prevalence of more intracuticular waxes embedded into the cutin matrix as fillers. These distinct responses of cuticular waxes in M20 conferred low water loss and high tolerance to drought. Melatonin and abscisic acid (ABA), which can be induced by drought, promoted the biosynthesis of alkanes (C29 and C31) but inhibited the accumulation of wax crystals under drought. Moreover, melatonin inhibited the elevation of ABA levels under mild drought but promoted the ABA accumulation under severe drought, indicating that melatonin and ABA function synergistically to regulate wax compositions to limit non-stomatal water loss under severe but not mild drought in watermelon. These findings can be exploited to improve crop tolerance to drought in arid regions.
英文关键词	Cuticular wax Abscisic acid Melatonin Drought stress Watermelon
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000520812200001
WOS关键词	LEAF CUTICULAR WAXES ; PLANT-SURFACES ; CUTICLE ; BIOSYNTHESIS ; DEFICIENCY ; EXPRESSION ; TRANSPORT ; COENZYME ; IMPACT ; LEAVES
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315053
作者单位	1.Northwest A&F Univ, Coll Hort, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Shaanxi, Peoples R China; 2.Henan Univ Sci & Technol, Coll Forestry, Luoyang 471023, Henan, Peoples R China
推荐引用方式 GB/T 7714	Li, Hao,Guo, Yanliang,Cui, Qi,et al. Alkanes (C29 and C31)-Mediated Intracuticular Wax Accumulation Contributes to Melatonin- and ABA-Induced Drought Tolerance in Watermelon[J]. 西北农林科技大学,2020,39(4):1441-1450.
APA	Li, Hao.,Guo, Yanliang.,Cui, Qi.,Zhang, Zixing.,Yan, Xing.,...&Zhang, Xian.(2020).Alkanes (C29 and C31)-Mediated Intracuticular Wax Accumulation Contributes to Melatonin- and ABA-Induced Drought Tolerance in Watermelon.JOURNAL OF PLANT GROWTH REGULATION,39(4),1441-1450.
MLA	Li, Hao,et al."Alkanes (C29 and C31)-Mediated Intracuticular Wax Accumulation Contributes to Melatonin- and ABA-Induced Drought Tolerance in Watermelon".JOURNAL OF PLANT GROWTH REGULATION 39.4(2020):1441-1450.