Comparative transcriptome analyses of fruit development among pears, peaches, and strawberries provide new insights into single sigmoid patterns

BMC Plant Biology
Mao-Song PeiShao-Ling Zhang

Abstract

Pear fruit exhibit a single sigmoid pattern during development, while peach and strawberry fruits exhibit a double sigmoid pattern. However, little is known about the differences between these two patterns. In this study, fruit weights were measured and paraffin sections were made from fruitlet to maturated pear, peach, and strawberry samples. Results revealed that both single and double sigmoid patterns resulted from cell expansion, but not cell division. Comparative transcriptome analyses were conducted among pear, peach, and strawberry fruits at five fruit enlargement stages. Comparing the genes involved in these intervals among peaches and strawberries, 836 genes were found to be associated with all three fruit enlargement stages in pears (Model I). Of these genes, 25 were located within the quantitative trait locus (QTL) regions related to fruit weight and 90 were involved in cell development. Moreover, 649 genes were associated with the middle enlargement stage, but not early or late enlargement in pears (Model II). Additionally, 22 genes were located within the QTL regions related to fruit weight and 63 were involved in cell development. Lastly, dual-luciferase assays revealed that the screened bHLH transcription factors...Continue Reading

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Citations

Jan 9, 2021·BMC Genomics·Ricardo Nilo-PoyancoAndrea Miyasaka Almeida

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Methods Mentioned

BETA
GTPase
RNA Assay
Assay
PCR

Software Mentioned

BLAST
KOBAS
limma
SPSS
OrthoFinder
Cuffdiff
Bowtie2
imageJ
StringTie
HISAT2

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