Angiosperm-wide analysis of fruit and ovary evolution aided by a new nuclear phylogeny supports association of the same ovary type with both dry and fleshy fruits  

作　　者：Yezi Xiang Taikui Zhang Yiyong Zhao Hongjin Dong Hongyi Chen Yi Hu Chien-Hsun Huang Jun Xiang Hong Ma 

机构地区：[1]State Key Laboratory of Genetic Engineering,Ministry of Education Key Laboratory of Biodiversity and Ecological Engineering,Institute of Plant Biology,Center of Evolutionary Biology,School of Life Sciences,Fudan University,Shanghai 200438,China [2]Department of Biology,Howard Hughes Medical Institute,Duke University,Durham,NC 27708,USA [3]Department of Biology,the Eberly College of Science,and the Huck Institutes of the Life Sciences,the Pennsylvania State University,University Park,PA 16802,USA [4]Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization,College of Biology and Agricultural Resources,Huanggang Normal University,Huanggang 438000,China

出　　处：《Journal of Integrative Plant Biology》2024年第2期228-251,共24页植物学报（英文版）

基　　金：supported by funds from the National Natural Science Foundation of China(31670209,31770242,and 31970224);China Postdoctoral Science Foundation(2019M661344);funds from the Ministry of Education Key Laboratory of Biodiversity Science and Ecological Engineering and State Key Laboratory of Genetic Engineering at Fudan University;funds from the National Top Talent Undergraduate Training Program for outstanding undergraduates and the Wangdao Program for undergraduate research at Fudan University;funds from the Eberly College of Science(Department of Biology)and the Huck Institutes for the Life Sciences at the Pennsylvania State University。

摘　　要：Fruit functions in seed protection and dispersal and belongs to many dry and fleshy types,yet their evolutionary pattern remains unclear in part due to uncertainties in the phylogenetic relationships among several orders and families.Thus we used nuclear genes of 502 angiosperm species representing 231 families to reconstruct a well supported phylogeny,with resolved relationships for orders and families with previously uncertain placements.Using this phylogeny as a framework,molecular dating supports a Triassic origin of the crown angiosperms,followed by the emergence of most orders in the Jurassic and Cretaceous and their rise to ecological dominance during the Cretaceous Terrestrial Revolution.The robust phylogeny allowed an examination of the evolutionary pattern of fruit and ovary types,revealing a trend of parallel carpel fusions during early diversifications in eudicots,monocots,and magnoliids.Moreover,taxa in the same order or family with the same ovary type can develop either dry or fleshy fruits with strong correlations between specific types of dry and fleshy fruits;such associations of ovary,dry and fleshy fruits define several ovaryfruit"modules"each found in multiple families.One of the frequent modules has an ovary containing multiple ovules,capsules and berries,and another with an ovary having one or two ovules,achenes(or other single-seeded dry fruits)and drupes.This new perspective of relationships among fruit types highlights the closeness of specific dry and fleshy fruit types,such as capsule and berry,that develop from the same ovary type and belong to the same module relative to dry and fleshy fruits of other modules(such as achenes and drupes).Further analyses of gene families containing known genes for ovary and fruit development identified phylogenetic nodes with multiple gene duplications,supporting a possible role of whole-genome duplications,in combination with climate changes and animal behaviors,in angiosperm fruit and ovary diversification.

关 键 词：ANGIOSPERM fruit evolution MADS-box molecular clock nuclear phylogeny ovary and fruit developmental genes 

分 类 号：Q943[生物学—植物学]