文献类型：期刊文献

英文题名：A comparative study of seed reserve accumulation?in five Styrax species with potential for biofuel production

作者：Wu, Qikui[1,2] Cao, Yuanyuan[1] Zhao, Xue[1] Zhang, Zihan[1,3] Yu, Fangyuan[1] Guy, Robert D.[2]

第一作者：Wu, Qikui

通信作者：Yu, Fangyuan

机构：[1] Collaborative Innovation Centre of Sustainable Forestry in Southern China, College of Forest Science, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China; [2] Department of Forest and Conservation Sciences, Faculty of Forestry, University of British Columbia, 2424 Main Mall, Vancouver, BC, V6T 1Z4, Canada; [3] State Key Laboratory of Tree Genetics and Breeding & Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China

年份：2020

卷号：34

期号：4

起止页码：891-902

外文期刊名：Trees - Structure and Function

收录：EI(收录号：20201208327763);Scopus(收录号：2-s2.0-85081900049)

语种：英文

外文关键词：Biodiesel - Palmitic acid - Starch - Proteins - Oils and fats - Proven reserves - Biochemistry

摘要：Key Message: Carbon competition between starch and oil biosynthesis during seed development of Styrax tonkinensis has been reported, but reserve dynamics indicate an absence of significant carbon competition in other Styrax species. Abstract: The accumulation of different storage reserves during seed development can be competitive. Carbon competition (i.e., carbon flow into starch instead of oil) has been reported in Styrax tonkinensis (Pierre) Craib ex Hartwich. In this study, developmental patterns in morphology and the accumulation of major biochemical fractions of five other Styrax species (S. calvescens Perkins, S. dasyantha Perk., S. faberi Perk., S. japonicus Sieb. et Zucc., and S. odoratissimus Champ. ex Benth.) were analyzed over 50?days. In all species, kernel fresh matter and dry matter increased during development, while the percent water content trended downwards to lower than 40% at the last sampling date. The time to maturity varied with species, as did the evolution of oil, fatty acids composition, sugar, starch, and protein. Contents of these major reserve fractions per kernel increased with development and were strongly correlated with each other. Final oil concentration ranged from 489 to 548?mg?g?1, and the proportions of major fatty acids (palmitic, oleic and linoleic acid) were similar across species (11–15%, 39–41% and 43–47%, respectively). In contrast, starch concentrations never exceeded 7–45?mg?g?1, depending on species and developmental stage. Final protein concentration ranged from 165 to 237?mg?g?1. A slowdown in the speed of oil accumulation midway during development may occur in S. faberi but was not present in the other species. None of the five Styrax species examined here presented evidence for significant carbon competition between starch and oil accumulation. ? 2020, Springer-Verlag GmbH Germany, part of Springer Nature.