Rice Glucose 6-Phosphate/Phosphate Translocator 1 is required for tapetum function and pollen develo

来源 :作物学报(英文版) | 被引量 : 0次 | 上传用户:cxy8933
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
In plants, non-green plastids in heterotrophic tissues are sites for starch and fatty acids biosynthesis, which are essential for plant development and reproduction. Distinct from chloroplasts, the metabolites for these processes in non-green plastids have to be imported through specific transporters. Glucose 6-Phosphate/Phosphate Translocator 1 is required for the uptake of cytosolic Glucose 6-Phosphate into non-green plastids. In Arabidopsis, GPT1 has been demonstrated to play essential roles in male, female gametophyte and embryo development. However, the roles of GPTs in other species are yet largely unknown. Here, we reported that rice OsGPT1 is indispensable for normal tapetal degeneration and pol-len exine formation during anther and pollen development. OsGPT1 is localized in the plastid and dis-tributed in the anther wall layers and late-stage pollen grains. Different from the gametic defects caused by mutation in AtGPT1, disruption of OsGPT1 does not affect male and female gamete transmission as well as embryo development. On the contrary, osgpt1 mutant exhibits delayed tapetum degeneration, decreased Ubisch bodies formation and thinner pollen exine, leading to pollen abortion at the mature stage. Furthermore, the expression of several genes involved in tapetal programmed cell death (PCD) and sporopollenin formation is decreased in osgpt1. Our study suggests that OsGPT1 coordinates the development of anther sporophytic tissues and the male gametophyte by integrating carbohydrate and fatty acid metabolism in the plastid.
其他文献
为了解常用钝化剂对酸性镉轻度污染农田土壤的修复效果,在水稻-小麦种植模式下于2016—2018年进行不同用量生石灰、 钙镁磷肥、 生物质炭、 羟基磷灰石等4种钝化剂对土壤酸碱度、 有效镉和籽粒中镉积累影响的试验.结果表明,生石灰、 钙镁磷肥、 生物质炭、 羟基磷灰石等4种钝化剂均可有效提高土壤pH值,降低土壤有效镉及水稻、 小麦籽粒中镉的含量.其效果随钝化剂用量的增加而增加,对降低水稻籽粒中镉积累的效果大于对小麦籽粒中镉积累的效果.与对照土壤比较,4种钝化材料均不会对土壤肥力质量产生负面影响,并可轻微增加
1. IntroductionrnGlobal food security faces a severe challenge, as world population is predicted to grow by 25%and reach 10 billion by the mid-21st cen-tury [1]. With limited agricultural land and fresh water, greater and more sustainable crop production
期刊
随着“数字浙江”“信用浙江”的深入推进,农产品质量安全智慧监管进入新阶段,健全农业生产主体信用评价体系,建设农业生产主体信用评价系统已提上议事日程.本文从农业生产主体信用评价建设的必要性出发,梳理目前存在的主要问题,并提出可实施的对策建议.
将中国各省份分为东部、 中部、 西部,基于中国各省的省级面板数据构建面板数据模型,实证检验农业政策性金融信贷业务对农民收入的影响.实证结果表明,中国农业发展银行的信贷业务确实对农民收入的提高有显著的影响,不同的信贷业务对农民收入的影响不尽相同.同时农业政策性金融信贷业务在不同地区对农民收入的影响也不相同.因此,农发行信贷业务对农民收入的促进作用不能片面的只在全国范围内研究,还需要分区域调查.本文根据实证结果提出了有关农发行信贷业务的政策建议,以便更好地提高农民收入.
Sugar metabolism plays an essential role in plant male reproduction. Defects in sugar metabolism during anther and pollen development often result in genic male sterility (GMS). In this review, we summarize the recent progresses of the sugar metabolism-re
休闲农业与乡村旅游是全国都市型现代农业的重要组成部分,是实现乡村产业振兴的关键之所在.近些年来,全国休闲农业蓬勃发展,但各省市发展情况不一,本文以2018年数据为依据,从8个指标来分析全国休闲农业的发展情况,以此寻求适合全国休闲农业发展的对策建议.
Normal microsporogenesis is determined by both nuclear and mitochondrial genes. In maize C-type cyto-plasmic male sterility, it is unclear how the development of meiocytes and microspores is affected by the mitochondrial sterility gene and the nuclear res
Anther development is a programmed biological process crucial to plant male reproduction. Genome-wide analyses on the functions of transcriptional factor (TF) genes and their microRNA (miRNA) regula-tors contributing to anther development have not been co
Soybean [Glycine max (L.) Merr.] provides a rich source of plant protein and oil worldwide. The commer-cial use of transgenic technology in soybean has become a classical example of the application of biotech-nology to crop improvement. Although genetical
Genic male sterility (GMS) is one of the most important resources for exploiting heterosis in crop breed-ing, so that identifying genomic loci regulating GMS is desirable. However, many regulatory genes con-trolling GMS have not yet been characterized in