Dynamics of non-structural carbohydrates following a full masting event reveal a role for stored starch in relation to reproduction in Fagus crenata
作者机构：Department of Plant EcologyForestry and Forest Products Research Institute(FFPRI)1 MatsunosatoTsukubaIbaraki 305-8687Japan Faculty of AgricultureUniversity of ShizuokaOhya 836Shizuoka 422-8529Japan University of Shizuoka
出 版 物：《Forestry Research》 (林学研究（英文）)
年 卷 期：2021年第1卷第1期
页 面：163-172页
学科分类：0907[农学-林学] 08[工学] 0829[工学-林业工程] 09[农学]
基 金：supported by JSPS KAKENHI Grant Numbers JP18580155 JP21380103 and JP20H00436
主 题：roots starch structural
摘 要：Although mature trees have substantial non-structural carbohydrate(NSC)storage that is well documented with respect to its capacity to buffer the asynchrony of supply and demand at the whole-plant level,its role in reproduction remains poorly understood,especially in mast seeding *** order to elucidate whether masting depletes the whole-tree NSC storage pool,seasonal and inter-annual variations in starch and soluble sugar(SS)concentrations in branchlets,stems and coarse roots of Fagus crenata were measured in two stands over 5 years after a full masting *** masting reduced individual storage pools to 72% and 49% of the maxima in the two stands;this was observed 2-3 years after full *** addition,temporary reduction in starch concentration in summer due to moderate fruiting was found in roots and deep sapwood cores of stems,representing tree rings formed 20 years ago,but not in *** with a higher starch storage pool in roots than in branchlets,these results indicate that starch stored in roots and stems is available and supports life-history traits,such as masting events,that occur ***,limited rainfall in the late growing season caused a reduction in both organ NSC concentration and individual storage irrespective of masting,which further complicated the masting-NSC *** findings have important implications for interpreting the role of carbon resources in masting events.
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