Artículo
Functional roles of microbial symbionts in plant cold tolerance
Acuña Rodríguez, Ian S.; Newsham, Kevin K.; Gundel, Pedro Emilio
; Torres Díaz, Cristian; Molina Montenegro, Marco A.
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
04/2020
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Ecology Letters
ISSN:
1461-023X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In this review, we examine the functional roles of microbial symbionts in plant tolerance to cold and freezing stresses. The impacts of symbionts on antioxidant activity, hormonal signaling and host osmotic balance are described, including the effects of the bacterial endosymbionts Burkholderia, Pseudomonas and Azospirillum on photosynthesis and the accumulation of carbohydrates such as trehalose and raffinose that improve cell osmotic regulation and plasma membrane integrity. The influence of root fungal endophytes and arbuscular mycorrhizal fungi on plant physiology at low temperatures, for example their effects on nutrient acquisition and the accumulation of indole-3-acetic acid and antioxidants in tissues, are also reviewed. Meta-analyses are presented showing that aspects of plant performance (shoot biomass, relative water content, sugar and proline concentrations and Fv/Fm) are enhanced in symbiotic plants at low (−1 to 15 °C), but not at high (20–26 °C), temperatures. We discuss the implications of microbial symbionts for plant performance at low and sub-zero temperatures in the natural environment and propose future directions for research into the effects of symbionts on the cold and freezing tolerances of plants, concluding that further studies should routinely incorporate symbiotic microbes in their experimental designs.
Palabras clave:
ARBUSCULAR MYCORRHIZAS
,
BACTERIA
,
COLD STRESS
,
ENDOPHYTES
,
FREEZING
,
FUNGI
,
SYMBIOSIS
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Identificadores
Colecciones
Articulos(IFEVA)
Articulos de INST.D/INV.FISIOLOGICAS Y ECO.VINCULADAS A L/AGRIC
Articulos de INST.D/INV.FISIOLOGICAS Y ECO.VINCULADAS A L/AGRIC
Citación
Acuña Rodríguez, Ian S.; Newsham, Kevin K.; Gundel, Pedro Emilio; Torres Díaz, Cristian; Molina Montenegro, Marco A.; Functional roles of microbial symbionts in plant cold tolerance; Wiley Blackwell Publishing, Inc; Ecology Letters; 23; 6; 4-2020; 1034-1048
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