【摘 要】
：
Seed development of flowering plants begins with the double fertilization,in which one sperm in the pollen fertilizes the egg to form a diploid zygote and then develop into embryo,while the other fuse
【机 构】
：
Institute of Plant Physiology and Ecology,Shanghai Institutes for Biological Sciences,Chinese Academ
论文部分内容阅读
Seed development of flowering plants begins with the double fertilization,in which one sperm in the pollen fertilizes the egg to form a diploid zygote and then develop into embryo,while the other fuses with the central cell to develop into a triploid endosperm.In Arabidopsis (dicot),the embryo morphogenesis is completed by seven days after pollination and then is followed by the maturing stage,while the endosperm begins to degenerate,leading to only the outmost aleurone layer in endosperm being viable at seed maturity.As a consequence the cotyledons in embryo are the main storage organ in Arabidopsis.By contrast,maize seed (monocot) has a persistent endosperm,which accounts for 80-90 ％of dry seed weight and therefore is the main storage organ.Although the storage organs in monocot and dicot derive from the different products of double fertilization,their seed storage protein (SSP) genes are precisely regulated in temporal and spatial specificities.Moreover,the SSP gene promoters from dicot and monocot seem to share some regulatory elements.
其他文献
Phosphorus deficiency limits plant growth and development.To better understand the mechanisms behind how maize responds to phosphate stress,we compared the proteome analysis results of two groups of m
The maize vp-102 is a Mutator (Mu) induced viviparous mutant,which has white or pale yellow kernels sprouting before harvest.In this study,we reported the cloning of vp-102 gene by a modified digestio
Soil waterlogging is one of the major abiotic stresses affecting maize grain yields.To understand the molecular mechanisms underlying waterlogging tolerance in maize,the iTRAQ LC-MS/MS technique was e
Alternative splicing (AS) is an important regulatory mechanism that contributes greatly to the diversity of eukaryotic transcriptomes.Much evidence has demonstrated that AS complexity is relevant to e
Natural antisense transcript (NAT),one prominent and complex class of regulatory RNA,is subject to regulation in stress response.In our study,strand-specific transcriptome sequencing was applied to id
Natural antisense transcript (NAT),one prominent and complex class of regulatory RNA,is subject to regulation in stress response.In our study,strand-specific transcriptome sequencing was applied to id
Seed storage proteins are the main repository for nitrogen and thus provide nutrient source for embryo germination,humans and livestock feeding.Prolamins,the major cereal seed storage proteins,accumul
Maize was domesticated from teosinte (Zea mays ssp.Parviglumis) about 9000 years ago in the Balsas region of South-Western Mexico.The external morphological changes since domestication have been widel
Drought stress is one of the important environment stresses that greatly limit plant growth and crop production.Maize is considered as one of the most drought sensitive crops,especially,drought stress
Drought stress is one of the important environment stresses that greatly limit plant growth and crop production.Maize is considered as one of the most drought sensitive crops,especially,drought stress