Root hydraulic conductance, aquaporins and plant growth promoting microorganisms: A revision

• Published in: Applied soil ecology : a section of Agriculture, ecosystems & environment Vol. 61; pp. 247 - 254
• Main Authors: Groppa, María Daniela, Benavides, María Patricia, Zawoznik, Myriam Sara
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 01-10-2012; Elsevier
• Subjects: Agronomy. Soil science and plant productions; Aquaporins; Biological and medical sciences; Chemical, physicochemical, biochemical and biological properties; colonizing ability; Drought; Fundamental and applied biological sciences. Psychology; hosts; microbial growth; Physics, chemistry, biochemistry and biology of agricultural and forest soils; plant growth; Plant growth promoting microorganisms; rhizosphere bacteria; Root hydraulic conductance; root hydraulic conductivity; roots; Salinity; salt stress; soil fungi; Soil science; Root hydraulic conductance; Drought; Aquaporins; Plant growth promoting microorganisms; Salinity; Root; Growth; Stimulation; Hydraulic conductivity; Ecology; Revision; Soil science; Microorganism; Aquaporin
• ISSN: 0929-1393; 1873-0272
• DOI: 10.1016/j.apsoil.2011.11.013

► Several PGPM improve plant water status and alleviate drought and salinity damage. ► Aquaporins may be relevant for quick water adjustments in root cells. ► PIPs constitute one of the most important subfamilies of plant aquaporins. ► The effects of various PGPM on PIPs expression in roots are revised in this review.
A considerable number of soil and rhizospheric fungi and bacteria collectively known as plant growth promoting microorganisms (PGPM) have demonstrated ability to colonize plant roots and to provide benefits to their hosts. Among these benefits, many authors documented improved root hydraulic conductance and alleviation of abiotic stresses such as drought and salinity. Today, it is accepted that movement through aquaporins represents a quite faster pathway of water movement across biological membranes. This review is intended to reflect the state of art in the knowledge of PGPM effects on plant water status and root hydraulic conductance, with special emphasis on the experimental data that prove or suggest an impact of PGPM on root aquaporins under both normal and water limiting conditions.