Expression of apomixis genes during reproductive development in Urochloa decumbens and Urochloa ruziziensis (Poaceae).

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dc.contributorMARA JANE DA ROCHA, UNIVERSIDADE FEDERAL DE LAVRAS; ANA GABRIELA DAMASCENO, UNIVERSIDADE FEDERAL DE LAVRAS; RUBENS DIOGO JUNIOR, UNIVERSIDADE FEDERAL DE LAVRAS; HELOISA OLIVEIRA DOS SANTOS, UNIVERSIDADE FEDERAL DE LAVRAS; FAUSTO DE SOUZA SOBRINHO, CNPGL; VÂNIA HELENA TECHIO, UNIVERSIDADE FEDERAL DE LAVRAS; WELISON ANDRADE PEREIRA, UNIVERSIDADE FEDERAL DE LAVRAS.
dc.creatorROCHA, M. J. da
dc.creatorDAMASCENO, A. G.
dc.creatorDIOGO JUNIOR, R.
dc.creatorSANTOS, H. O. dos
dc.creatorSOUZA SOBRINHO, F. de
dc.creatorTECHIO, V. H.
dc.creatorPEREIRA, W. A.
dc.date2026-03-31T12:49:08Z
dc.date2026-03-31T12:49:08Z
dc.date2026-03-31
dc.date2026
dc.date.accessioned2026-07-07T04:01:20Z
dc.descriptionThis study aimed to correlate the developmental stages of the embryo sac with the morphometric traits of spikelets and to characterize the expression of the BbrizRan, BbrizSti1, and BbrizAGL6genes in Urochloa ruziziensis(sexual) and U. decumbens(apomictic). Data on the length and diameter of spikelets and anatomical sections were also obtained. Gene expression was determined using RT-qPCR in spikelets at megasporogenesis and megagametogenesis. The spikelet length could be used as a reliable morphological marker to discriminate between the two stages in both species. The embryo sacs observed were of the Polygonumtype in U. ruziziensisand the Panicumtype in U. decumbens. RT-qPCR analysis revealed that the BbrizRan, BbrizSti1, and BbrizAGL6genes were differentially expressed in the studied species during reproductive development. The BbrizSti1gene was more highly expressed in U. decumbens(apomictic) than in U. ruziziensis(sexual) during megasporogenesis, while for BbrizRan, U. decumbensshowed higher expression than U. ruziziensisduring both megasporogenesis and megagametogenesis. An increase in the expression level of BbrizAGL6was observed in both species at both developmental stages ofthe embryo sac.
dc.identifierActa Scientiarum. Agronomy, v. 48, n. 1, e74683, 2026.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1185935
dc.identifierhttps://doi.org/10.4025/actasciagron.v48i1.74683
dc.identifier.urihttp://hdl.handle.net/123456789/450704
dc.languageeng
dc.rightsopenAccess
dc.subjectExpressão gênica
dc.subjectMegasporogênese
dc.subjectMegagametogênese
dc.subjectBraquiaria
dc.subjectBrachiaria
dc.subjectApomixia
dc.subjectReprodução Assexuada
dc.subjectGramínea Forrageira
dc.titleExpression of apomixis genes during reproductive development in Urochloa decumbens and Urochloa ruziziensis (Poaceae).
dc.typeArtigo de periódico

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