The response of mesophyll conductance to nitrogen and water availability differs between wheat genotypes

被引：26

作者：

Barbour, Margaret M. ^{[1
]}

Kaiser, Brent N. ^{[1
]}

机构：

[1] Univ Sydney, Ctr Carbon Water & Food, 380 Werombi Rd, Brownlow Hill, NSW 2570, Australia

来源：

PLANT SCIENCE | 2016年 / 251卷

关键词：

Water-use efficiency; Mesophyll conductance; Carbon isotope discrimination; Drought; Nitrogen availability; Triticum aestivum; CARBON-ISOTOPE DISCRIMINATION; CO2 TRANSFER CONDUCTANCE; ORYZA-SATIVA L; LEAF PHOTOSYNTHESIS; USE EFFICIENCY; GAS-EXCHANGE; INTERNAL CONDUCTANCE; PLASMA-MEMBRANE; SPINACH LEAVES; DIFFUSION;

D O I：

10.1016/j.plantsci.2016.03.012

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Increased mesophyll conductance (gm) has been suggested as a target for selection for high productivity and high water-use efficiency in crop plants, and genotypic variability in gin has been reported in several important crop species. However, effective selection requires an understanding of how gm varies with growth conditions, to ensure that the ranking of genotypes is consistent across environments. We assessed the genotypic variability in gm and other leaf gas exchange traits, as well as growth and biomass allocation for six wheat genotypes under different water and nitrogen availabilities. The wheat genotypes differed in their response of gm to growth conditions, resulting in genotypic differences in the mesophyll limitation to photosynthesis and a significant increase in the mesophyll limitation to photosynthesis under drought. In this experiment, leaf intrinsic water-use efficiency was more closely related to stomatal conductance than to mesophyll conductance, and stomatal limitation to photosynthesis increased more in some genotypes than in others in response to drought. Screening for g(m), should be carried out under a range of growth conditions. (C) 2016 Elsevier Ireland Ltd. All rights reserved.

引用

页码：119 / 127

页数：9

共 51 条

[1] Genetic control of mesophyll conductance in common wheat [J].

Barbour, Margaret M. ;

Bachmann, Sarah ;

Bansal, Urmil ;

Bariana, Harbans ;

Sharp, Peter .

NEW PHYTOLOGIST, 2016, 209 (02) :461-465

[2] Variability in mesophyll conductance between barley genotypes, and effects on transpiration efficiency and carbon isotope discrimination [J].

Barbour, Margaret M. ;

Warren, Charles R. ;

Farquhar, Graham D. ;

Forrester, Guy ;

Brown, Hamish .

PLANT CELL AND ENVIRONMENT, 2010, 33 (07) :1176-1185

[3]

Bernacchi C.J., 2002, PLANT PHYSIOL, V130, P434

[4] The influence of nitrogen and phosphorus supply and genotype on mesophyll conductance limitations to photosynthesis in Pinus radiata [J].

Bown, Horacio E. ;

Watt, Michael S. ;

Mason, Euan G. ;

Clinton, Peter W. ;

Whitehead, David .

TREE PHYSIOLOGY, 2009, 29 (09) :1143-1151

[5] Breeding for high water-use efficiency [J].

Condon, AG ;

Richards, RA ;

Rebetzke, GJ ;

Farquhar, GD .

JOURNAL OF EXPERIMENTAL BOTANY, 2004, 55 (407) :2447-2460

[6] Is mesophyll conductance to CO2 in leaves of three Eucalyptus species sensitive to short-term changes of irradiance under ambient as well as low O2? [J].

Douthe, Cyril ;

Dreyer, Erwin ;

Brendel, Oliver ;

Warren, Charles R. .

FUNCTIONAL PLANT BIOLOGY, 2012, 39 (05) :435-448

[7] On the need to incorporate sensitivity to CO2 transfer conductance into the Farquhar-von Caemmerer-Berry leaf photosynthesis model [J].

Ethier, GJ ;

Livingston, NJ .

PLANT CELL AND ENVIRONMENT, 2004, 27 (02) :137-153

[8] Temperature response of carbon isotope discrimination and mesophyll conductance in tobacco [J].

Evans, John R. ;

Von Caemmerer, Susanne .

PLANT CELL AND ENVIRONMENT, 2013, 36 (04) :745-756

[9]

EVANS JR, 1988, PLANT CELL PHYSIOL, V29, P157

[10] THE RELATIONSHIP BETWEEN CO2 TRANSFER CONDUCTANCE AND LEAF ANATOMY IN TRANSGENIC TOBACCO WITH A REDUCED CONTENT OF RUBISCO [J].

EVANS, JR ;

VONCAEMMERER, S ;

SETCHELL, BA ;

HUDSON, GS .

AUSTRALIAN JOURNAL OF PLANT PHYSIOLOGY, 1994, 21 (04) :475-495

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