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Genome-wide identification and expression analysis of MADS-box family genes in litchi (Litchi chinensis Sonn.) and their involvement in floral organogenesis

ABSTRACT: Genome-wide identification and expression analysis of MADS-box family genes in litchi (Litchi chinensis Sonn.) and their involvement in floral organogenesis

PROVIDER: PRJNA756276 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15527800_1.fastq.gz	Fastqsanger.gz
	SRR15527800_2.fastq.gz	Fastqsanger.gz
	SRR15528900_1.fastq.gz	Fastqsanger.gz
	SRR15528900_2.fastq.gz	Fastqsanger.gz
	SRR15527801_1.fastq.gz	Fastqsanger.gz

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Genome-wide identification and expression analysis of MADS-box family genes in litchi (Litchi chinensis Sonn.) and their involvement in floral organogenesis II

Project description:Litchi possesses unique ﬂower morphology and adaptive reproduction strategies. Although previous attention has been intensively devoted to the mechanisms underlying its floral induction, the molecular basis of flower organ development remains largely unknown. MADS-box genes are promise candidates for this due to their significant roles in various aspects of inflorescence and flower organogenesis. Here, we present a detailed overview of phylogeny and expression profiles of 101 MADS-box genes that were identified in litchi. These LcMADSs are unevenly located across the 15 chromosomes, and can be divided into type I and type II genes. Fifty type I MADS-box genes are sub-divided into Mα, Mβ and Mγ subgroups, while fifty-one type II LcMADSs consist of 37 MIKCC -type and 14 MIKC*-type genes. Both two types of LcMADS genes mainly contain ABA and MeJA response elements. Tissue-specific and development-related expression analysis reveals that LcMADS51 could be positively involved in litchi carpel formation, while six MADS-box genes including LcMADS42/46/47/75/93/100 play a possible role in stamen development. GA is positively involved in the sex determination of litchi flowers by regulating the expression of LcMADS75 (LcAP1) and LcMADS51 (LcSTK). However, JA probably plays a negative role in litchi flower development.

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Genome-wide identification and expression analysis of MADS-box family genes in litchi (Litchi chinensis Sonn.) and their involvement in floral organogenesis I

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Genome-wide identification and expression analysis of MADS-box family genes in litchi (Litchi chinensis Sonn.) and their involvement in floral organogenesis II

Project description:Genome-wide identification and expression analysis of MADS-box family genes in litchi (Litchi chinensis Sonn.) and their involvement in floral organogenesis II

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Genome-wide identification and expression analysis of MADS-box family genes in litchi (Litchi chinensis Sonn.) and their involvement in floral organogenesis I

Project description:Genome-wide identification and expression analysis of MADS-box family genes in litchi (Litchi chinensis Sonn.) and their involvement in floral organogenesis I

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Genome-wide identification and expression analysis of MADS-box family genes in litchi (Litchi chinensis Sonn.) and their involvement in floral organogenesis

Project description:This SuperSeries is composed of the SubSeries listed below.

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Litchi chinensis cultivar:Sonn. Wuye

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Genome-Wide Identification and Expression Analysis of MADS-Box Family Genes in Litchi (Litchi chinensis Sonn.) and Their Involvement in Floral Sex Determination.

Project description:Litchi possesses unique flower morphology and adaptive reproduction strategies. Although previous attention has been intensively devoted to the mechanisms underlying its floral induction, the molecular basis of flower sex determination remains largely unknown. MADS-box genes are promising candidates for this due to their significant roles in various aspects of inflorescence and flower organogenesis. Here, we present a detailed overview of phylogeny and expression profiles of 101 MADS-box genes that were identified in litchi. These LcMADSs are unevenly located across the 15 chromosomes and can be divided into type I and type II genes. Fifty type I MADS-box genes are subdivided into Mα, Mβ and Mγ subgroups, while fifty-one type II LcMADSs consist of 37 MIKCC -type and 14 MIKC *-type genes. Promoters of both types of LcMADS genes contain mainly ABA and MeJA response elements. Tissue-specific and development-related expression analysis reveal that LcMADS51 could be positively involved in litchi carpel formation, while six MADS-box genes, including LcMADS42/46/47/75/93/100, play a possible role in stamen development. GA is positively involved in the sex determination of litchi flowers by regulating the expression of LcMADS51 (LcSTK). However, JA down-regulates the expression of floral organ identity genes, suggesting a negative role in litchi flower development.

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Project description:Floral induction in litchi is influenced by multiple environment cues including temperature and soil water condition. In the present study, we determined that a combined treatment consisting of 14-day drought imposed prior to exposure to 35-day low temperature (T3) significantly promoted litchi flowering relative to the low temperature alone (T2), suggesting an integrative effect of drought and low temperature on litchi floral initiation. Analysis of transcriptomic changes in leaves from different treatments showed that 2,198 and 4,407 unigenes were differentially expressed in response to drought and low temperature, respectively. 1,227 of these unigenes were expressed in response to both treatments, implying an interaction of drought and low temperature on expression of genes involved in litchi floral initiation. Additionally, 932 unigenes were consistently differentially expressed during floral induction between T2 and T3 plants, which potentially accounts for the difference of flowering time. Thirty-eight transcription factors out of these 932 unigenes were identified as hub genes with central roles in regulation of litchi floral induction. The expression of litchi homologs of well-known flowering genes was also investigated, and one Flowering Locus T (FT) homolog may play a crucial role in litchi flowering in responses to drought and low temperature.

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