Evidence of programmed cell death during microsporogenesis in an interspecific Brachiaria (Poaceae: Panicoideae: Paniceae) hybrid.

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dc.contributorVeridiana Aparecida Fuzinatto, UEM; Maria Suely Pagliarini, UEM; CACILDA BORGES DO VALLE, CNPGC.
dc.creatorFUZINATTO, V. A.
dc.creatorPAGLIARINI, M. S.
dc.creatorVALLE, C. B. do
dc.date2018-01-29T23:34:19Z
dc.date2018-01-29T23:34:19Z
dc.date2008-03-17
dc.date2007
dc.date2018-01-29T23:34:19Z
dc.date.accessioned2026-07-07T03:40:17Z
dc.descriptionMorphological changes have been investigated during plant programmed cell death (PCD) in the last few years due to the new interest in a possible apoptotic-like phenomenon existing in plants. Although PCD has been reported in several tissues and specialized cells in plants, there have been few reports of its occurrence during microsporogenesis. The present study reports a typical process of PCD during meiosis in an interspecific Brachiaria hybrid leading to male sterility. In this hybrid, some inflorescences initiated meiosis but it was arrested in zygotene/pachytene. From this stage, meiocytes underwent a severe alteration in shape showing substantial membrane blebbing; the cytoplasm became denser at the periphery; the cell nucleus entered a progressive stage of chromatin disintegration, and then the nucleolus disintegrated, and the cytoplasm condensed and shrunk. The oldest flowers of the raceme showed only the callose wall in the anthers showing obvious signs of complete sterility.
dc.identifierGenetics and Molecular Research, Ribeirão Preto, v. 6, n. 2, p. 308-315, 2007.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/326640
dc.identifier.urihttp://hdl.handle.net/123456789/440347
dc.languageeng
dc.rightsopenAccess
dc.subjectBraquiária
dc.subjectPCD
dc.subjectCampo Grande
dc.subjectMato Grosso do Sul
dc.subjectBrasil
dc.subjectFeed crops
dc.subjectFeed grasses
dc.subjectMelhoramento genético vegetal
dc.subjectCitogenética vegetal
dc.subjectPlanta Forrageira
dc.subjectGramínea forrageira
dc.subjectHibrido
dc.subjectMeiose
dc.subjectCytogenetics
dc.subjectPlant breeding
dc.subjectHybrids
dc.subjectMeiosis
dc.subjectBrazil
dc.titleEvidence of programmed cell death during microsporogenesis in an interspecific Brachiaria (Poaceae: Panicoideae: Paniceae) hybrid.
dc.typeArtigo de periódico

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