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Artículo

NaPi/SX-RNase segregates as a functional S-RNase and is induced under phosphate deficiency in Nicotiana alata

Rojas, H. J.; Caspani, Carolina; Escobar, E. G.; Quiroga, RodrigoIcon ; Goldraij, ArielIcon
Fecha de publicación: 06/2018
Editorial: Springer
Revista: Biologia Plantarum
ISSN: 0006-3134
e-ISSN: 1573-8264
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Bioquímica y Biología Molecular; Ciencias de la Información y Bioinformática

Resumen

In plants, class III T2 RNases involves two groups of structurally similar proteins, but with different biological functions: S-RNases and non-S-RNases. S-RNases have been involved in self-incompatibility whereas non-S-RNases have been implicated in stress responses. Here we report a novel class III RNase termed NaPi/Sx-RNase, which works both in self-incompatibility and in response to phosphate deficiency. The NaPi/Sx-RNase gene was identified in roots of Nicotiana alata grown in the absence of inorganic phosphate. Phylogenetic analysis showed that NaPi/Sx-RNase was included within the class III RNase T2 group. The NaPi/Sx-RNase was expressed in styles and its temporal expression increased in parallel to stylar development, with a slight decrease after anthesis. Progeny analysis showed that NaPi/Sx-RNase and S107-RNase, a functional allele of the self-incompatibility system, segregated in a 1:1 ratio. The progeny segregation of a semicompatible cross, in which NaPi/Sx-RNase was shared by the two parents, exhibited a pattern consistent with a functional S-RNase allele. Considering genetic segregation, primary structure, and physiological role, the NaPi/Sx-RNase may be either an S-RNase with diversified functions or a non-S-RNase linked to the S-locus. To our knowledge, this is the first evidence for a specific function of the S-locus other than the self-incompatibility reaction. These results support the hypothesis that the self-incompatibility and stress responses may have evolved from a common origin.
Palabras clave: RIBONUCLEASE , S-LOCUS , SELF-INCOMPATIBILITY , STRESS RESPONSES
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/90784
DOI: http://dx.doi.org/10.1007/s10535-018-0783-6
URL: https://link.springer.com/article/10.1007%2Fs10535-018-0783-6
Colecciones
Articulos(INFIQC)
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Citación
Rojas, H. J.; Caspani, Carolina; Escobar, E. G.; Quiroga, Rodrigo; Goldraij, Ariel; NaPi/SX-RNase segregates as a functional S-RNase and is induced under phosphate deficiency in Nicotiana alata; Springer; Biologia Plantarum; 62; 2; 6-2018; 261-268
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