中国水稻科学2017，Vol.31Issue(1)：91-98,8.DOI:10.16819/j.1001-7216.2017.6062
水稻胚乳组织的结构观察
Structure Observation of Rice Endosperm Tissues
摘要
Abstract
[Objective] The objective of this research was to clarify structural characteristics of aleurone cells, sub-aleurone cells and central starchy endosperm cells.[Method]We observed and investigated rice endosperm using a light microscopy, a transmission electron microscopy and a scanning electron microscopy.[Result ] During the differentiation process of aleurone cells,the large vacuoles were transformed into protein storage vacuoles of small volume and protein storage vacuoles were transformed into aleurone granules.There were more layers of aleurone cells in the dorsal part than in the ventral part of caryopses.However,the formation and accumulation rate of aleurone granules was slower in aleurone cells of the dorsal part of caryopses.Sub-aleurone cells initially included some lipid bodies,and later lipid bodies disappeared and amyloplasts and protein bodies in them increased gradually.Central starchy endosperm cells included amyloplasts and protein bodies.Vacuolar protein bodies occupied the major part of to-tal protein bodies and they could fused with one another to be larger.Starch accumulation rate of central starchy endosperm cells was evidently quicker than that of sub-aleurone cells.In mature caryopses,amyloplasts were very dense in central starchy endosperm cells,amyloplasts were sparser in sub-aleurone cells of dorsal and lateral parts of caryopses and amyloplasts were sparsest in sub-aleurone cells of the ventral part of caryopses.[Conclusion]Structural differences of aleurone cells and sub-aleurone cells in dorsal and ventral parts of rice caryopses might be related to nutri-ent absorption and translocation.Developmental rate of amyloplasts in central starchy endosperm cells was quicker than that in sub-aleurone cells.关键词
水稻/胚乳/糊粉层细胞/亚糊粉层细胞/中心胚乳贮藏细胞Key words
rice/endosperm/aleurone cells/sub-aleurone cells/central starchy endosperm cells分类
农业科技引用本文复制引用
郑彦坤,曾德二,魏和平,许远,顾蕴洁,王忠..水稻胚乳组织的结构观察[J].中国水稻科学,2017,31(1):91-98,8.基金项目
安徽省教育厅重点项目(KJ2015A168) （KJ2015A168）
安徽省高等学校省级优秀青年人才基金重点项目(2013SQRL060ZD （）
国家自然科学基金资助项目(31270228). （31270228）
