文献类型：期刊文献

英文题名：Variation in Amygdalin Content in Kernels of Six Almond Species (Prunus spp. L.) Distributed in China

作者：Wang, Wei[1,2] Xiao, Xun-Ze[1] Xu, Xin-Qiao[1] Li, Zhen-Jian[1] Zhang, Jun-Ming[1,3]

第一作者：Wang, Wei;王伟

通信作者：Wang, W[1];Wang, W[2]

机构：[1]Chinese Acad Forestry, Inst Forestry, Key Lab Silviculture State Forestry Adm, Beijing, Peoples R China;[2]Yulin Univ, Sch Life Sci, Yulin, Peoples R China;[3]Taiyuan Normal Univ, Dept Biol, Taiyuan, Peoples R China

年份：2022

卷号：12

外文期刊名：FRONTIERS IN PLANT SCIENCE

收录：;Scopus(收录号：2-s2.0-85124591299);WOS:【SCI-EXPANDED(收录号:WOS:000760542700001)】；

基金：The authors gratefully acknowledge the financial support from the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2017ZA004-7), the National Natural Science Foundation of China (32170392, 41501059), and the National Science and Technology Program for Public Wellbeing (2012GS610203).

语种：英文

外文关键词：almond species; almond kernel; amygdalin; amygdalin diversity; amygdalin synthesis; environmental factor

摘要：Amygdalin, a naturally occurring compound, is one of the main active ingredients of the Chinese raw bitter almond. The variation in amygdalin composition of seed kernels among the six almond species was determined, and relationships with geoenvironmental factors were analyzed. The amygdalin content exhibited great diversity, ranging from 0.0004 to 9.73 g/100 g. The highest level of amygdalin was detected in Tangut almond, with 5.45-9.73 g/100 g. The other kernels showed a range from 3.14 to 6.80 g/100 g in wild almond and from 3.00 to 4.22 g/100 g in longstalk almond. Amygdalin in common almond was almost undetectable. Factor analysis showed that amygdalin content in Prunus spp. kernels increased with altitude and decreased with the degree of aspect. Many environmental factors were closely related to amygdalin content, including annual precipitation (Bio12), UV intensity, and topsoil base saturation (T_BS), which all had a significant effect on amygdalin content. The amygdalin content is closely related to rainfall indicators, especially annual precipitation (Bio12), with the highest factor analysis value (3.63). Water regulates amygdalin in diverse ways. Since amygdalin is water-soluble, water can reduce the inhibitory effect of amygdalin on germination and regulate the synthesis of amygdalin at the late stage of germination by activating the amygdalin synthesis genes CYP79D16 and CYP71AN24. This study expands the understanding of amygdalin in almond resources and provides the direction for the regulation of amygdalin.