« Previous AbstractInfluence of Plant Growth Retardants on Quality of Codonopsis Radix    Next AbstractHerbivore-Induced (Z)-3-Hexen-1-ol is an Airborne Signal That Promotes Direct and Indirect Defenses in Tea (Camellia sinensis) under Light »

J Adv Res

Title:		Induced biosynthesis of chlorogenic acid in sweetpotato leaves confers the resistance against sweetpotato weevil attack
Author(s):		Liao Y; Zeng L; Rao S; Gu D; Liu X; Wang Y; Zhu H; Hou X; Yang Z;
Address:		"Guangdong Provincial Key Laboratory of Applied Botany & Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, China. University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China. Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, No. 723 Xingke Road, Tianhe District, Guangzhou 510650, China. College of Life Sciences, South China Normal University, Zhongshan Avenue West 55, Tianhe District, Guangzhou 510631, China. College of Agriculture, Guangdong Ocean University, Haida Road 1, Mazhang District, Zhanjiang 524088, China"
Journal Title:		J Adv Res
Year:		2020
Volume:		20200617
Issue:
Page Number:		513 - 522
DOI:		10.1016/j.jare.2020.06.011
ISSN/ISBN:		2090-1232 (Print) 2090-1224 (Electronic) 2090-1224 (Linking)
Abstract:		"Sweetpotato weevil is among the most harmful pests in some major sweetpotato growing areas with warm climates. To enable the future establishment of safe weevil-resistance strategies, anti-weevil metabolites from sweetpotato should be investigated. In the present study, we pretreated sweetpotato leaves with exogenous chlorogenic acid and then exposed them to sweetpotato weevils to evaluate this compound's anti-insect activity. We found that chlorogenic acid applied to sweetpotato conferred significant resistance against sweetpotato-weevil feeding. We also observed enhanced levels of chlorogenic acid in response to weevil attack in sweetpotato leaves. To clarify how sweetpotato weevils regulate the generation of chlorogenic acid, we examined key elements of plant-herbivore interaction: continuous wounding and phytohormones participating in chlorogenic acid formation. According to our results, sweetpotato weevil-derived continuous wounding induces increases in phytohormones, including jasmonic acid, salicylic acid, and abscisic acid. These phytohormones can upregulate expression levels of genes involved in chlorogenic acid formation, such as IbPAL, IbC4H and IbHQT, thereby leading to enhanced chlorogenic acid generation. This information should contribute to understanding of the occurrence and formation of natural anti-weevil metabolites in sweetpotato in response to insect attack and provides critical targets for the future breeding of anti-weevil sweetpotato cultivars"
Keywords:		"4CL, 4-coumarate: CoA ligase ABA, abscisic acid C3H, p-coumarate 3-hydroxylase C4H, cinnamate 4-hydroxylase CAF, caffeic acid CGA, chlorogenic acid Chlorogenic acid Continuous wounding HCGQT, hydroxycinnamoyl glucose: quinate hydroxycinnamoyl transferase;"
Notes:		"PubMed-not-MEDLINELiao, Yinyin Zeng, Lanting Rao, Shunfa Gu, Dachuan Liu, Xu Wang, Yaru Zhu, Hongbo Hou, Xingliang Yang, Ziyin eng Egypt 2020/07/03 J Adv Res. 2020 Jun 17; 24:513-522. doi: 10.1016/j.jare.2020.06.011. eCollection 2020 Jul"