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dc:title "HTML Summary of #11582 \n\nMultiomics approach unravels fertility transition in a pigeonpea line for a two‐line hybrid system\n\n";
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bibo:abstract "Pigeonpea [Cajanus cajan (L.) Millsp.] is a pulse crop cultivated in the semi-arid\r\nregions of Asia and Africa. It is a rich source of protein and capable of alleviating\r\nmalnutrition, improving soil health and the livelihoods of small-holder farmers.\r\nHybrid breeding has provided remarkable improvements for pigeonpea productivity,\r\nbut owing to a tedious and costly seed production system, an alternative\r\ntwo-line hybrid technology is being explored. In this regard, an environmentsensitive\r\nmale sterile line has been characterized as a thermosensitive male sterile\r\nline in pigeonpea precisely responding to day temperature. The male sterile\r\nand fertile anthers from five developmental stages were studied by integrating\r\ntranscriptomics, proteomics and metabolomics supported by precise phenotyping\r\nand scanning electron microscopic study. Spatio-temporal analysis of anther\r\ntranscriptome and proteome revealed 17 repressed DEGs/DEPs in sterile anthers\r\nthat play a critical role in normal cell wall morphogenesis and tapetal cell development.\r\nThe male fertility to sterility transitionwasmainly due to a perturbation\r\nin auxin homeostasis, leading to impaired cellwallmodification and sugar transport.\r\nLimited nutrient utilization thus leads to microspore starvation in response\r\nto moderately elevated day temperature which could be restored with auxin-treatment in the male sterile line. Our findings outline a molecular mechanism\r\nthat underpins fertility transition responses thereby providing a process-oriented\r\ntwo-line hybrid breeding framework for pigeonpea."^^xsd:string;
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dct:date "2020-06";
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