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DOI:10.21273/JASHS.140.6.605
Web URL(s):https://journals.ashs.org/jashs/view/journals/jashs/140/6/article-p605.xml
    Last checked: 04/30/2020
https://journals.ashs.org/jashs/downloadpdf/journals/jashs/140/6/article-p605.xml
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Publication Type:
i
Refereed
Author(s):Liu, Nanqing; Shen, Yixin; Huang, Bingru
Author Affiliation:Liu and Shen: College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing,and Department of Landscape Architecture, Jiangsu Polytechnic College of Agriculture and Forestry, Jurong, P.R. China; Liu and Huang: Department of Plant Biology and Pathology, Rutgers University, New Brunswick, NJ
Title:Osmoregulants involved in osmotic adjustment for differential drought tolerance in different bentgrass genotypes
Source:Journal of the American Society for Horticultural Science. Vol. 140, No. 6, November 2015, p. 605-613.
Publishing Information:Geneva, New York: The American Society for Horticultural Science
# of Pages:9
Keywords:TIC Keywords: Agrostis; Agrostis stolonifera; Agrostis tenuis; Comparisons; Cultivar evaluation; Drought resistance; Genetic variability; Hybrids; Osmotic adjustment; Turfgrass quality
Cultivar Names:Penncross; SAGIPT41; ColxCr14; ColxCr190; ColxCr481; ColxCr679
Abstract/Contents:"Compatible solute accumulation regulating osmotic adjustment (OA) is associated with drought tolerance. The objectives of this study were to examine genetic variations in OA among a diverse group of bentgrass (Agrostis sp.) genotypes or lines with differential drought tolerance, and determine major types of organic osmoregulants contributing to OA and accounting for the genetic variations in drought tolerance. A wild type cultivar of creeping bentgrass [Agrostis stolonifera (Penncross)], a transgenic line of creeping bentgrass (SAGIPT41), and four hybrid bentgrass lines [Agrostis capillaris x Agrostis stolonifera (ColxCr14, ColxCr190, ColxCr481, and ColxCr679)] were exposed to drought stress by withholding irrigation for 17 days in growth chambers. Among genotypes, ColxCr14, ColxCr190, and SAGIPT41 showed superior drought tolerance, as manifested by higher turf quality (TQ) and leaf relative water content (RWC), as well as OA than 'Penncross', ColxCr679, and ColxCr481 under drought stress. SAGIPT41 leaves accumulated greater content of soluble sugars (glucose, sucrose, and fructose), proline, glycine betaine (GB), and spermine; ColxCr190 had higher content of soluble sugars and spermidine; and ColxCr14 accumulated more soluble sugars and GB, compared with the three drought-sensitive genotypes. Soluble sugars were predominant contributors to OA, followed by GB and proline, with all three forms of polyamine (PA) as minor contributors in bentgrass genotypes. The osmolytes highly correlated to OA and superior drought tolerance could be used as biomarkers to select for drought-tolerant germplasm of bentgrass and other cool-season turfgrass species."
Language:English
References:43
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Liu, N., Y. Shen, and B. Huang. 2015. Osmoregulants involved in osmotic adjustment for differential drought tolerance in different bentgrass genotypes. J. Am. Soc. Hortic. Sci. 140(6):p. 605-613.
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DOI: 10.21273/JASHS.140.6.605
Web URL(s):
https://journals.ashs.org/jashs/view/journals/jashs/140/6/article-p605.xml
    Last checked: 04/30/2020
https://journals.ashs.org/jashs/downloadpdf/journals/jashs/140/6/article-p605.xml
    Last checked: 04/30/2020
    Requires: PDF Reader
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