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Changes in root hydraulic conductivity during wheat evolution

Title data

Zhao, Chang-Xing ; Deng, Xiping ; Shan, Lun ; Steudle, Ernst ; Zhang, Sui-Qi ; Ye, Qing:
Changes in root hydraulic conductivity during wheat evolution.
In: Journal of Integrative Plant Biology. Vol. 47 (2005) Issue 3 . - pp. 302-310.
ISSN 1744-7909
DOI: https://doi.org/10.1111/j.1744-7909.2005.00043.x

Abstract in another language

A better understanding of the mechanisms of water uptake by plant roots should be vital for improving drought resistance and water use efficiency (WUE). In the present study, we have demonstrated correlations between root system hydraulic conductivity and root characteristics during evolution using six wheat evolution genotypes (solution culture) with different ploidy chromosome sets (Triticum boeoticum Bioss., T. monococcum L.: 2n = 2x = 14; T dicoccides Koern., T dicoccon (Schrank) Schuebl.: 2n = 4x = 28; T vulgare Vill., T aestivum L. cv. Xiaoyan No. 6: 2n = 6x = 42). The experimental results showed that significant correlations were found between root system hydraulic conductivity and root characteristics of the materials with the increase in ploidy chromosomes (2x -> 6x) during wheat evolution. Hydraulic conductivity of the wheat root system at the whole-plant level was increased with chromosome ploidy during evolution, which was positively correlated with hydraulic conductivity of single roots, whole plant biomass, root average diameter, and root growth (length, area), whereas the root/shoot ratio had an inverse correlation with the hydraulic conductivity of root system with increasing chromosome ploidy during wheat evolution. Therefore, it is concluded that that the water uptake ability of wheat roots was strengthened from wild to modern cultivated species during evolution, which will provide scientific evidence for genetic breeding to improve the WUE of wheat by genetic engineering.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER33577
Institutions of the University: Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Ecology
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 18 Jun 2015 06:36
Last Modified: 27 Apr 2016 12:16
URI: https://eref.uni-bayreuth.de/id/eprint/15285