首页|Transcriptome and morphological analyses of double flower formation in Dianthus chinensis

Transcriptome and morphological analyses of double flower formation in Dianthus chinensis

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The double flower developmental process is regulated via a complex transcriptional regulatory network.To understand this highly dynamic and complex developmental process of Dianthus spp.,we performed a comparative analysis of floral morphology and transcriptome dynamics in simple flowers and double flowers.We found that the primordium of double flowers of'X'was larger in size compared to that of simple flowers of'L'in Dianthus chinensis.RNA-seq and Weighted Gene Co-expression Network Analysis(WGCNA)during flower development,identified stage-specific gene network modules.Expression analysis by RNA-seq indicated that a group of genes related to floral meristem identity,primordia position and polarity were highly expressed in double flowers genotypes compared to simple flowers genotypes,suggesting their roles in double-petal formation.A total of 21 DEGs related to petal number were identified between simple and double flowers.The experiments of in situ hybridization revealed that DcaAP2L,DcaLFY and DcaUFO genes were expressed in the intra-sepal boundary and petal boundary.We proposed a potential transcriptional regulatory network for simple and double flower development.This study provides novel insights into the molecular mechanism underlying double flower formation in Dianthus spp.

Dianthus spp.Petal boundaryFloral morphologyDouble flowerCo-expression network

Xiaoni Zhang、Shengnan Lin、Quanshu Wu、Qijian Wang、Chunmei Shi、Manzhu Bao、Mohammed Bendahmane、Xiaopeng Fu、Zhiqiang Wu

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Guangdong Laboratory for Lingnan Modern Agriculture,Genome Analysis Laboratory of the Ministry of Agriculture,Agricultural Genomics Institute at Shenzhen,Chinese Academy of Agricultural Sciences,Shenzhen,Guangdong 518120,China

Key Laboratory of Horticultural Plant Biology,College of Horticulture and Forestry Sciences,Huazhong Agricultural University,Wuhan,Hubei 430070,China

Laboratoire Reproduction et Development des Plantes,INRA-CNRS-Lyon1-ENS,Ecole Normale Supérieure de Lyon,Lyon 520074,France

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaChina Postdoctoral Science Foundation

32002074318721352021M693445

2024

10.1016/j.hpj.2023.01.007

园艺学报(英文版)

园艺学报(英文版)

CSTPCD
ISSN：
年,卷(期)：2024.10(1)
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