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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Distinct small RNA populations act antagonistically in formation of heterosis

ABSTRACT: This research reports the analysis of sRNAs in 14 and 7 inbred lines from a breeding population. We analyzed the contribution of sRNAs to the formation of heterosis via integrative association analysis with field data of 98 hybrids generated from the set of inbred lines. Our results indicate a contribution of sRNAs to heterosis. We were able to identify different sets of sRNAs associated with heterosis with distinct length and genome distribution patterns. Analysis of sRNA contribution to the formation of heterosis in maize by an association study in a breeding population.

ORGANISM(S): Zea mays

SUBMITTER: Stefan Scholten

PROVIDER: E-GEOD-51662 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Parental Expression Variation of Small RNAs Is Negatively Correlated with Grain Yield Heterosis in a Maize Breeding Population.

Seifert Felix F Thiemann Alexander A Grant-Downton Robert R Edelmann Susanne S Rybka Dominika D Schrag Tobias A TA Frisch Matthias M Dickinson Hugh G HG Melchinger Albrecht E AE Scholten Stefan S

Frontiers in plant science 20180130

Heterosis refers to a quantitative phenomenon in which F1 hybrid trait values exceed the mean of the parental values in a positive direction. Generally, it is dependent on a high degree of heterozygosity, which is maintained in hybrid breeding by developing parental lines in separate, genetically distinct heterotic groups. The mobility of small RNAs (sRNAs) that mediate epigenetic regulation of gene expression renders them promising candidates for modulating the action of combined diverse genome ...[more]

PMID: 29441076

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Distinct small RNA populations act antagonistically in formation of heterosis

Project description:This research reports the analysis of sRNAs in 14 and 7 inbred lines from a breeding population. We analyzed the contribution of sRNAs to the formation of heterosis via integrative association analysis with field data of 98 hybrids generated from the set of inbred lines. Our results indicate a contribution of sRNAs to heterosis. We were able to identify different sets of sRNAs associated with heterosis with distinct length and genome distribution patterns.

2016-10-24 | GSE51662 | GEO

Small RNA expression pattern in multiple inbred lines and their hybrids of maize embryo

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Metabolome-based prediction of yield heterosis contributes to the breeding of elite rice

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2014-08-17 | E-GEOD-51468 | biostudies-arrayexpress

Oryza sativa Transcriptome or Gene expression

Project description:A biological phenomenon in which hybrids exhibit superior phenotypes from its parental inbred lines known as heterosis, has been widely exploited in plant breeding and extensively used in crop improvement. Hybrid rice has immense potential to increase yield over other rice varieties and hence is crucial in meeting increasing demand of rice globally. Moreover, the molecular basis of heterosis is still not fully understood and hence it becomes imperative to unravel its genetic and molecular basis. In this context, RNA sequencing technology (RNA-Seq) was employed to sequence transcriptomes of two rice hybrids, Ajay and Rajalaxmi, their parental lines, CRMS31A (sterile line, based on WA-CMS) and CRMS32A (sterile line based on Kalinga-CMS) respectively along with the common restorer line of both hybrids, IR-42266-29-3R at two critical rice developmental stages viz., panicle initiation (PI) and grain filling (GF). Identification of differentially expressed genes (DEGs) at PI and GF stages will further pave the way for understanding heterosis. In addition, such kind of study would help in better understanding of heterosis mechanism and genes up-regulated and down-regulated during the critical stages of rice development for higher yield.

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