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dc.contributor.author
Ochogavía, Ana Claudia
dc.contributor.author
Novello, María Alejandra
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Bianchi, Marta Beatriz
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Picardi, Liliana Amelia
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Nestares, Graciela María
dc.date.available
2019-12-10T20:08:34Z
dc.date.issued
2018-09
dc.identifier.citation
Ochogavía, Ana Claudia; Novello, María Alejandra; Bianchi, Marta Beatriz; Picardi, Liliana Amelia; Nestares, Graciela María; Partial male sterility in imisun sunflower: Imazapyr treatment in advanced vegetative stages decreases pollen yield and alters ahas gene expression; Crop Science Society of America; Crop Science; 58; 5; 9-2018; 1877-1889
dc.identifier.issn
0011-183X
dc.identifier.uri
http://hdl.handle.net/11336/91964
dc.description.abstract
Imidazolinones are powerful herbicides that inhibit branched-chain amino acid biosynthesis by targeting the catalytic subunit of acetohydroxyacid synthase (AHAS). Imidazolinone application in the advanced vegetative or early reproductive developmental stages is associated with male sterility in resistant sunflower (Helianthus annuus L.); however, the underlying mechanism of this sterility remains unknown. This study describes the morphological, cytoem-bryological, and molecular alterations induced by imazapyr (IM) treatment on reproductive tissues at different developmental stages in two sunflower genotypes, resistant and intermediate resistant, respectively. Pollen and seed physiological variables were compared between the treated and control plants. The number of pollen grains per flower and viable seeds were negatively affected by IM treatment in the intermediate-resistant genotype, and the biometric traits of early developed disc flower were also significantly different in this genotype. Differential interference contrast microscopy revealed that IM treatment slightly accelerates megagamethophyte development. Anther observations at microsporogenesis using confocal microscopy show that the sporogenous tissue was damaged. Furthermore, the expression profiles of the sunflower AHAS paralogs (ahas1, ahas2, and ahas3) were measured by quantitative polymerase chain reaction in the anthers and pistils of two developmental stages in treated and control plants. Imazapyr treatment in early reproductive growth stages clearly induces divergent expression patterns in the ahas gene family. These findings provide new insight into a novel chemical method for inducing male sterility in sunflowers and enhance our understanding of the effects of AHAS-inhibitor herbicides in reproductive tissues.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Crop Science Society of America
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
MALE STERILTY
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SUNFLOWER
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AHAS-INHIBITOR´S HERBICIDES
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Otras Biotecnología Agropecuaria
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Biotecnología Agropecuaria
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CIENCIAS AGRÍCOLAS
dc.title
Partial male sterility in imisun sunflower: Imazapyr treatment in advanced vegetative stages decreases pollen yield and alters ahas gene expression
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-23T20:55:14Z
dc.journal.volume
58
dc.journal.number
5
dc.journal.pagination
1877-1889
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Baltimore
dc.description.fil
Fil: Ochogavía, Ana Claudia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Investigaciones en Ciencias Agrarias de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias. Instituto de Investigaciones en Ciencias Agrarias de Rosario; Argentina
dc.description.fil
Fil: Novello, María Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Investigaciones en Ciencias Agrarias de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias. Instituto de Investigaciones en Ciencias Agrarias de Rosario; Argentina
dc.description.fil
Fil: Bianchi, Marta Beatriz. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias; Argentina
dc.description.fil
Fil: Picardi, Liliana Amelia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Investigaciones en Ciencias Agrarias de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias. Instituto de Investigaciones en Ciencias Agrarias de Rosario; Argentina
dc.description.fil
Fil: Nestares, Graciela María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Investigaciones en Ciencias Agrarias de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias. Instituto de Investigaciones en Ciencias Agrarias de Rosario; Argentina
dc.journal.title
Crop Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://dl.sciencesocieties.org/publications/cs/abstracts/58/5/1877
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.2135/cropsci2017.12.0726
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