Mobilization and synthesis of seed storage and LEA proteins during natural priming of Buddleja cordata and Opuntia tomentosa
Por:
Alvarado-Lopez, Sandra, Gomez-Maqueo, Ximena, Soriano, Diana, Orozco-Segovia, Alma, Gamboa-de Buen, Alicia
Publicada:
1 ene 2018
Categoría:
Plant science
Resumen:
Background: In crop plants, the induction of seed storage protein mobilization and synthesis of LEA family proteins has been extensively described. Question: Natural priming promotes mobilization and synthesis of seed storage and LEA proteins in wild plants? Species studied: Buddleja cordata and Opuntia tomentosa. Study site: Reserva Ecológica del Pedregal de San Angel (REPSA). Methods: Natural priming treatments were applied to B. cordata and O. tomentosa seeds during one and six months respectively. Phosphorylated proteins fractions were obtained by affnity chromatography from control and treated seeds. Differences in protein pattern between control and treated seeds were determined by electrophoresis and the treated seed proteins were identifed by LS/LS/MALDITOF. Results: The phosphorylated fraction of B. cordata treated seeds presented two proteins that were absent in the control protein fraction. These two proteins were identifed as two different 11S globulins. The phosphorylated fraction of O. tomentosa treated seeds also presented two proteins that were absent in the control protein fraction. These two proteins were identifed as a 12S globulin and a LEA protein. Conclusion: Seeds are subjected to changes in soil water content during their permanence in soil; this natural priming process promotes mobilization and synthesis of storage and LEA proteins that are involved in stress resistance. © 2018 Sociedad Botanica de Mexico, A.C. All rights reserved.
Filiaciones:
Alvarado-Lopez, Sandra:
Instituto de Ecología, Universidad Nacional Autónoma de México, CDMX, Mexico
Univ Nacl Autonoma Mexico, Inst Ecol, Mexico City, DF, Mexico
Gomez-Maqueo, Ximena:
Instituto de Ecología, Universidad Nacional Autónoma de México, CDMX, Mexico
Univ Nacl Autonoma Mexico, Inst Ecol, Mexico City, DF, Mexico
Soriano, Diana:
Instituto de Biología, Universidad Nacional Autónoma de México, CDMX, Mexico
Univ Nacl Autonoma Mexico, Inst Biol, Mexico City, DF, Mexico
Orozco-Segovia, Alma:
Instituto de Ecología, Universidad Nacional Autónoma de México, CDMX, Mexico
Univ Nacl Autonoma Mexico, Inst Ecol, Mexico City, DF, Mexico
Gamboa-de Buen, Alicia:
Instituto de Ecología, Universidad Nacional Autónoma de México, CDMX, Mexico
Univ Nacl Autonoma Mexico, Inst Ecol, Mexico City, DF, Mexico
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