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鉴定与石榴种子重量相关的候选扩展蛋白基因。

Identification of Candidate Expansin Genes Associated with Seed Weight in Pomegranate ( L.).

机构信息

Key Laboratory of Horticultural Crop Germplasma Innovation and Utilisation (Co-Construction by Ministry and Province), Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei 230031, China.

Key Laboratory of Genetic Improvement and Eco-Physiology of Horticultural Crops, Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei 230031, China.

出版信息

Genes (Basel). 2024 Feb 6;15(2):212. doi: 10.3390/genes15020212.

DOI:10.3390/genes15020212
PMID:38397202
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10888256/
Abstract

Seed weight is an important target trait in pomegranate breeding and culture. Expansins act by loosening plant cell walls and cellulosic materials, permitting turgor-driven cell enlargement. However, the role of expansin genes () in pomegranate seed weight remains elusive. A total of 29 were identified in the 'Dabenzi' genome. These genes were classified into four subfamilies and 14 subgroups, including 22 , 5 , 1 , and 1 . Transcriptome analysis of in different tissues (root, leaf, flower, peel, and seed testa) in 'Dabenzi', and the seed testa of the hard-seeded pomegranate cultivar 'Dabenzi' and soft-seeded cultivar 'Tunisia' at three development stages showed that three (, , ) were highly expressed throughout seed development, especially in the sarcotesta. SNP/Indel markers of these were developed and used to genotype 101 pomegranate accessions. The association of polymorphic with seed weight-related traits (100-seed weight, 100-kernel weight, 100-sarcotesta weight, and the percentage of 100-sarcotesta to 100-seed weight) were analyzed. was significantly associated with 100-seed weight and 100-sarcotesta weight and is a likely candidate for regulating seed weight and sarcotesta development in particular. This study provides an effective tool for the genetic improvement of seed weight in pomegranate breeding programs.

摘要

种子重量是石榴育种和栽培的重要目标性状。扩展蛋白通过疏松植物细胞壁和纤维素材料，允许膨压驱动的细胞增大。然而，扩展蛋白基因（）在石榴种子重量中的作用仍不清楚。在 '大笨子' 基因组中鉴定出了 29 个。这些基因被分为四个亚家族和 14 个亚组，包括 22 个，5 个，1 个和 1 个。在 '大笨子' 的不同组织（根、叶、花、皮和种皮）以及硬籽石榴品种 '大笨子' 和软籽品种 '突尼斯' 的种皮中进行的 转录组分析表明，三个 （，，）在整个种子发育过程中高度表达，特别是在种皮中。这些 的 SNP/Indel 标记被开发出来并用于对 101 个石榴种质进行基因分型。对这些 多态性与种子重量相关性状（百粒重、百仁重、百仁皮重和百仁皮重与百粒重的百分比）进行了关联分析。与 100 粒重和 100 仁皮重显著相关，是调控种子重量和种皮发育的候选基因。本研究为石榴育种中种子重量的遗传改良提供了有效工具。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b89/10888256/a7b4d32c3049/genes-15-00212-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b89/10888256/3a968e36fe1f/genes-15-00212-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b89/10888256/fd1c313690bc/genes-15-00212-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b89/10888256/325a49c9d672/genes-15-00212-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b89/10888256/3aa982c1bc46/genes-15-00212-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b89/10888256/a7b4d32c3049/genes-15-00212-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b89/10888256/3a968e36fe1f/genes-15-00212-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b89/10888256/fd1c313690bc/genes-15-00212-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b89/10888256/325a49c9d672/genes-15-00212-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b89/10888256/3aa982c1bc46/genes-15-00212-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b89/10888256/a7b4d32c3049/genes-15-00212-g005.jpg

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本文引用的文献

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Identification, Analysis and Gene Cloning of the SWEET Gene Family Provide Insights into Sugar Transport in Pomegranate ().
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Int J Mol Sci. 2022 Feb 23;23(5):2471. doi: 10.3390/ijms23052471.
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Overcoming the trade-off between grain weight and number in wheat by the ectopic expression of expansin in developing seeds leads to increased yield potential.通过在发育种子中外源表达扩展蛋白来克服小麦粒重和粒数之间的权衡关系，可提高产量潜力。
New Phytol. 2021 Apr;230(2):629-640. doi: 10.1111/nph.17048. Epub 2020 Dec 4.
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