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Saccharum hybrid cultivar

ABSTRACT: Genome-wide association studies reveal the genetic loci of sugarcane leaf angles at different developmental stages

PROVIDER: PRJNA810929 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR18233047_1.fastq.gz	Fastqsanger.gz
	SRR18233047_2.fastq.gz	Fastqsanger.gz
	SRR18233048_1.fastq.gz	Fastqsanger.gz
	SRR18233048_2.fastq.gz	Fastqsanger.gz
	SRR18233049_1.fastq.gz	Fastqsanger.gz

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Project description:We performed cell wall proteins (CWPs) extraction and analysis from sugarcane 7-month-old young and mature leaves and basal and apical internodes in order to point the differences regarding the cell wall proteome composition in these specific organs and diverse developmental stages. We used two different extraction methods for leaves CWPs: destructive and non-destructive. For internodes, only the non-destructive technique was used. The collection of CWPs was identified through LC-MS/MS analyses. Altogether, 110 sugarcane CWPs were identified and classified into eight functional categories. Sugarcane has one of the highest coverage of CWPs identified by mass spectrometry, reaching 283.

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Project description:Sugarcane established industrial crop providing sugar, ethanol and biomass-derived electricity around the world. Cane sugar content is an important, breeding target, but its improvement remains very slow in many breeding programmes. Biotechnology strategies to improve sucrose accumulation made little progress at crop level, mainly due to the limited understanding of its regulation. MiRNAs regulate many metabolic processes in plants. However, their roles and target genes associated with sugarcane sucrose accumulation remains unknown. Here, we conducted high-throughput sequencing of transcriptome, small RNAs and degradome of leaves and stem of two sugarcane genotypes with contrasting sucrose content from the early to late stages of sucrose accumulation stages, which provided more insights into miRNA-associated gene regulation during sucrose accumulation. Transcriptome analysis identified 18,722 differentially expressed genes (DEGs) between both genotypes during sucrose accumulation. The major DEGs identified were involved in starch and sucrose metabolism, and photosynthesis etc. miRNA sequencing identified 563 known and 281 novel miRNAs from both genotypes during sucrose accumulation. Of these, 311 miRNAs were differentially expressed.752 targets of 368 miRNAs (609 targets for 260 known miRNAs and 168 targets for 108 novel miRNAs) were identified by degradom sequencing.Several known and novel miRNAs and their target genes associated with sugar metabolism, sugar transport and sucrose storage were identified in this study.This new insight into the complex network of sucrose accumulation in sugarcane will help identify candidate targets for sucrose improvement in sugarcane through molecular means.

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