Research output: Contribution to Journal/Magazine › Literature review › peer-review
Research output: Contribution to Journal/Magazine › Literature review › peer-review
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TY - JOUR
T1 - Root-targeted biotechnology to mediate hormonal signalling and improve crop stress tolerance
AU - Edmond Ghanem, Michel
AU - Hichri, Imene
AU - Smigocki, Ann C.
AU - Albacete, Alfonso
AU - Fauconnier, Marie-Laure
AU - Diatloff, Eugene
AU - Martinez-Andujar, Cristina
AU - Lutts, Stanley
AU - Dodd, Ian C.
AU - Perez-Alfocea, Francisco
PY - 2011/5
Y1 - 2011/5
N2 - Since plant root systems capture both water and nutrients essential for the formation of crop yield, there has been renewed biotechnological focus on root system improvement. Although water and nutrient uptake can be facilitated by membrane proteins known as aquaporins and nutrient transporters, respectively, there is a little evidence that root-localised overexpression of these proteins improves plant growth or stress tolerance. Recent work suggests that the major classes of phytohormones are involved not only in regulating aquaporin and nutrient transporter expression and activity, but also in sculpting root system architecture. Root-specific expression of plant and bacterial phytohormone-related genes, using either root-specific or root-inducible promoters or grafting non-transformed plants onto constitutive hormone producing rootstocks, has examined the role of root hormone production in mediating crop stress tolerance. Root-specific traits such as root system architecture, sensing of edaphic stress and root-to-shoot communication can be exploited to improve resource (water and nutrients) capture and plant development under resource-limited conditions. Thus, root system engineering provides new opportunities to maintain sustainable crop production under changing environmental conditions.
AB - Since plant root systems capture both water and nutrients essential for the formation of crop yield, there has been renewed biotechnological focus on root system improvement. Although water and nutrient uptake can be facilitated by membrane proteins known as aquaporins and nutrient transporters, respectively, there is a little evidence that root-localised overexpression of these proteins improves plant growth or stress tolerance. Recent work suggests that the major classes of phytohormones are involved not only in regulating aquaporin and nutrient transporter expression and activity, but also in sculpting root system architecture. Root-specific expression of plant and bacterial phytohormone-related genes, using either root-specific or root-inducible promoters or grafting non-transformed plants onto constitutive hormone producing rootstocks, has examined the role of root hormone production in mediating crop stress tolerance. Root-specific traits such as root system architecture, sensing of edaphic stress and root-to-shoot communication can be exploited to improve resource (water and nutrients) capture and plant development under resource-limited conditions. Thus, root system engineering provides new opportunities to maintain sustainable crop production under changing environmental conditions.
KW - Abiotic stress
KW - Root-to-shoot signalling
KW - ABA
KW - Cytokinins
KW - ACC
KW - Grafting
KW - IPT
KW - Plant growth promoting rhizobacterium
KW - SOLANUM-LYCOPERSICON L.
KW - CYTOKININ BIOSYNTHESIS GENE
KW - TRANSGENIC TOBACCO PLANTS
KW - LEAF ABA CONCENTRATION
KW - WATER-USE EFFICIENCY
KW - ABSCISIC-ACID
KW - HYDRAULIC CONDUCTIVITY
KW - ARABIDOPSIS-THALIANA
KW - SYSTEM ARCHITECTURE
KW - SALINIZED TOMATO
U2 - 10.1007/s00299-011-1005-2
DO - 10.1007/s00299-011-1005-2
M3 - Literature review
VL - 30
SP - 807
EP - 823
JO - Plant Cell Reports
JF - Plant Cell Reports
SN - 0721-7714
IS - 5
ER -