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Comparative transcriptome analysis between inbred and hybrids reveals molecular insights into yield heterosis of upland cotton

ABSTRACT: Through genome-wide comparative transcriptome analysis of 63 samples, the current study identified nine key genes and pathways associated with biological process of yield heterosis in upland cotton. Our results and data resources provide novel insights and will be useful for dissecting the molecular mechanism of yield heterosis in cotton.

ORGANISM(S): Gossypium hirsutum

PROVIDER: GSE150052 | GEO | 2020/05/08

REPOSITORIES: GEO

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Comparative transcriptome analysis between inbred and hybrids reveals molecular insights into yield heterosis of upland cotton

Project description:Comparative transcriptome analysis between inbred and hybrids reveals molecular insights into yield heterosis of upland cotton

| PRJNA630998 | ENA

Comparative transcriptome analysis between inbred and hybrids reveals molecular insights into yield heterosis of upland cotton.

Project description:BACKGROUND:Utilization of heterosis has greatly improved the productivity of many crops worldwide. Understanding the potential molecular mechanism about how hybridization produces superior yield in upland cotton is critical for efficient breeding programs. RESULTS:In this study, high, medium, and low hybrids varying in the level of yield heterosis were screened based on field experimentation of different years and locations. Phenotypically, high hybrid produced a mean of 14% more seed cotton yield than its better parent. Whole-genome RNA sequencing of these hybrids and their four inbred parents was performed using different tissues of the squaring stage. Comparative transcriptomic differences in each hybrid parent triad revealed a higher percentage of differentially expressed genes (DEGs) in each tissue. Expression level dominance analysis identified majority of hybrids DEGs were biased towards parent like expressions. An array of DEGs involved in ATP and protein binding, membrane, cell wall, mitochondrion, and protein phosphorylation had more functional annotations in hybrids. Sugar metabolic and plant hormone signal transduction pathways were most enriched in each hybrid. Further, these two pathways had most mapped DEGs on known seed cotton yield QTLs. Integration of transcriptome, QTLs, and gene co-expression network analysis discovered genes Gh_A03G1024, Gh_D08G1440, Gh_A08G2210, Gh_A12G2183, Gh_D07G1312, Gh_D08G1467, Gh_A03G0889, Gh_A08G2199, and Gh_D05G0202 displayed a complex regulatory network of many interconnected genes. qRT-PCR of these DEGs was performed to ensure the accuracy of RNA-Seq data. CONCLUSIONS:Through genome-wide comparative transcriptome analysis, the current study identified nine key genes and pathways associated with biological process of yield heterosis in upland cotton. Our results and data resources provide novel insights and will be useful for dissecting the molecular mechanism of yield heterosis in cotton.

| S-EPMC7251818 | biostudies-literature

cDNA array expression profile of wild-type and fl-mutant upland cotton ovules

Project description:Comparison of gene expression profiles of wild-type and fl-mutant upland cotton ovules Keywords: repeat samples

2006-01-01 | GSE2901 | GEO

label-free analysis of male-sterile line 1355A of cotton

Project description:Cotton (Gossypium spp.) is one of the most important economic crops and exhibits yield-improving heterosis in specific hybrid combinations. The genic male-sterility system is the main strategy used for producing heterosis in cotton. To better understand the mechanisms of male sterility in cotton, we carried out label-free quantitative proteomics analysis in the anthers of two near-isogenic lines, the male-sterile line 1355A and the male-fertile line 1355B, the two isogenic lines. These experiments, along with bioinformatics analyses, identified 124 proteins from the anthers at uninucleate pollen stage (stage 8) that were significantly differentially expressed between these two lines.

2019-03-19 | PXD012398 | Pride

Identification of candidate thermotolerance genes during early seedling stage in upland cotton (Gossypium hirsutum L.) revealed by comparative transcriptome analysis

Project description:High temperature (HT) stress is a major environmental stress that limits cotton growth, metabolism, and yield worldwide. The identification and characterization of thermotolerance is restricted by the plant growth environment and growth stage. In this study, four genotypes of upland cotton (Gossypium hirsutum L.) with known field thermotolerance were evaluated under normal and HTs at the seedlings stage in a growth cabinet with 11 physiological, biochemical, and phenotypic assays. Consistent with previous field observations, the thermotolerance could be identified by genotype differences at the seedling stage under HT in a growth cabinet. Comparative transcriptome analysis was performed on seedlings of two contrasting cotton genotypes after 4 and 8 hours of HT exposure. Gene ontology analysis combined with BLAST annotations revealed a large number of HT-induced differentially expressed genes (4,698) that either exhibited higher expression levels in the heat-tolerant genotype (Nan Dan Ba Di Da Hua) compared with the heat-sensitive genotype (Earlistaple 7), or were differentially expressed only in Nan Dan Ba Di Da Hua. These genes encoded mainly protein kinases, transcription factors, and heat shock proteins, which were considered to play key roles in thermotolerance in upland cotton. Two heat shock transcription factor genes (homologs of AtHsfA3, AtHsfC1) and AP2/EREBP family genes (homologs of AtERF20, AtERF026, AtERF053, and AtERF113) were identified as possible key regulators of thermotolerance in cotton. Some of the differentially expressed genes were validated by quantitative real-time PCR analysis. Our findings provide candidate genes that could be used to improve thermotolerance in cotton cultivars.

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cDNA expression profiles of wild-type and fl-mutant upland cotton ovules during fiber initiation peroid

Project description:We constructed cDNA library from 0-10 day post anthesis cotton fibers when fiber cells begin to initiate and elongate throughout this peroid. We randomly sequenced over 95,000 ESTs from this library, and with request of upland cotton ESTs from other laboratories, we acquired a gene pool of more than 30,000 UniESTs. The cotton UniESTs were then PCR-amplified and printed onto microarray. This array is comprised of about 29,000 high-quality cotton cDNAs (each sequence length>400bp, average length > 600bp) and external controls. Keywords: repeat samples for transcriptome analysis

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Identification and comparison of miRNAs involved in cotton fiber elongation between sea-island and upland cotton

Project description:To identify potential miRNAs involved in fiber development and elucidate their expression differences between G. barbadense and G. hirsutum, we constructed two small RNA libraries, Gb10 and Gh10, prepared from fibers of 3-79 (G. barbadense) and TM-1 (G. hirsutum) collected at 10 days post-anthesis (DPA). We identified 28 conserved miRNA families, including 24 that exactly match known plant miRNA families in miRBase. With MIREAP and newly developed software miRsearcher, 7 candidate-novel miRNAs were found. 5 candidate-novel miRNAs were expressed in both species, 2 candidate-novel miRNAs were expressed only in one species. Moreover, 4 miRNA families showed significant expression differences between sea-island cotton and upland cotton in 10 DPA fibers.

2010-12-03 | GSE25773 | GEO

Gossypium hirsutum strain:upland cotton

Project description:Gossypium hirsutum strain:upland cotton Raw sequence reads

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Resistant response of leaves of upland cotton line Im216 to Xanthomonas campestris pv. malvacearum race 1

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2006-01-01 | GSE2851 | GEO

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