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八氢番茄红素合成酶基因的等位基因多样性影响柑橘F1杂种群体中柑橘果实的转录水平。

Allelic diversity of phytoene synthase gene influences the transcription level in citrus fruit among a citrus F hybrid population.

作者信息

Sugiyama Aiko, Ikoma Yoshinori, Fujii Hiroshi, Endo Tomoko, Nesumi Hirohisa, Shimada Takehiko, Omura Mitsuo

机构信息

The United Graduate School of Agriculture Science, Gifu University, Gifu 501-1193, Japan.

National Agriculture and Food Research Organization Institute of Fruit Tree and Tea Science, Shimizu, Shizuoka 424-0292, Japan.

出版信息

Breed Sci. 2017 Sep;67(4):382-392. doi: 10.1270/jsbbs.17033. Epub 2017 Aug 4.

DOI:10.1270/jsbbs.17033
PMID:29085248
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5654466/
Abstract

Phytoene synthase (PSY) is one of the key regulatory enzyme on the biosynthesis and accumulation of carotenoid in citrus fruits. The transcriptional diversity of is mainly attributed to the structural variation in promoter region among alleles. In aim to clarify how this transcriptional diversity is regulated among them, alleles responsible for carotenoid biosynthesis in the fruits are characterized and their promoter sequences were compared. Based on gene structure and expression pattern of homologues on the clementine mandarin genome sequence, alleles responsible for carotenoid biosynthesis are derived from a single locus in the scaffold 6. AG mapping population possessed four alleles derived from parent lines of A255 and G434, and their F individuals with allele tended to have low transcription level. From sequence comparison of their promoter regions, the -motif alternation from MYBPZM to RAV1AAT might be a candidate to influence the transcription level. Among the ancestral pedigree varieties of AG mapping population, the transcription level of correlated with genotypes of MYBPZM and RAV1AAT motifs in the promoter region of alleles, so that homozygous genotype of MYBPZM showed higher transcription level while heterozygous genotype of MYBPZM and RAV1AAT showed lower transcription level.

摘要

八氢番茄红素合成酶（PSY）是柑橘类果实中类胡萝卜素生物合成和积累的关键调控酶之一。其转录多样性主要归因于等位基因间启动子区域的结构变异。为阐明这些转录多样性是如何调控的，对果实中负责类胡萝卜素生物合成的等位基因进行了表征，并比较了它们的启动子序列。基于克莱门氏小柑橘基因组序列上同源基因的结构和表达模式，负责类胡萝卜素生物合成的等位基因源自支架6中的一个单一基因座。AG作图群体拥有来自亲本A255和G434的四个等位基因，且具有该等位基因的F个体往往转录水平较低。通过对其启动子区域的序列比较，从MYBPZM到RAV1AAT的基序交替可能是影响转录水平的一个候选因素。在AG作图群体的祖先谱系品种中，该等位基因的转录水平与启动子区域中MYBPZM和RAV1AAT基序的基因型相关，因此MYBPZM的纯合基因型显示出较高的转录水平，而MYBPZM和RAV1AAT的杂合基因型显示出较低的转录水平。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45b1/5654466/a1ef5a72892a/67_17033_6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45b1/5654466/92b35fb78f79/67_17033_1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45b1/5654466/388fb4a2001d/67_17033_2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45b1/5654466/b8fa4b8e28f5/67_17033_3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45b1/5654466/fbb683fe1818/67_17033_4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45b1/5654466/f4ba66d05ba2/67_17033_5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45b1/5654466/a1ef5a72892a/67_17033_6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45b1/5654466/92b35fb78f79/67_17033_1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45b1/5654466/388fb4a2001d/67_17033_2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45b1/5654466/b8fa4b8e28f5/67_17033_3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45b1/5654466/fbb683fe1818/67_17033_4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45b1/5654466/f4ba66d05ba2/67_17033_5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/45b1/5654466/a1ef5a72892a/67_17033_6.jpg

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