scholarly journals Dissection of physiological, transcriptional, and metabolic traits in two tall fescue genotypes with contrasting drought tolerance

2021 ◽  
Author(s):  
Yun Kang ◽  
Shyamal Talukder ◽  
Zewei An ◽  
Ivone Torres‐Jerez ◽  
Nick Krom ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Tall Fescue ◽  
Metabolic Traits

Drought Tolerance of Tall Fescue Populations Selected for High Root/Shoot Ratios and Summer Survival

Crop Science ◽  
2008 ◽  
Vol 48 (2) ◽  
pp. 771-777 ◽  
Author(s):  
Douglas E. Karcher ◽  
Michael D. Richardson ◽  
Kenneth Hignight ◽  
Debra Rush
Keyword(s):  
Drought Tolerance ◽  
Tall Fescue

scholarly journals Water Relations and Drought Tolerance of Four Turfgrasses

1997 ◽  
Vol 122 (1) ◽  
pp. 129-133 ◽  
Author(s):  
Yaling Qian ◽  
Jack D. Fry
Keyword(s):  
Drought Tolerance ◽  
Water Relations ◽  
Tall Fescue ◽  
Festuca Arundinacea ◽  
Cynodon Dactylon ◽  
Warm Season ◽  
Severe Drought ◽  
Pressure Potential ◽  
Volumetric Soil Water Content ◽  
Warm Season Grasses

Greenhouse studies were conducted on three warm-season turfgrasses, `Midlawn' bermudagrass [Cynodon dactylon (L.) Pers. × C. transvaalensis Burtt-Davy], `Prairie' buffalograss [Buchloe dactyloides (Nutt.) Engelm.], and `Meyer' zoysiagrass (Zoysia japonica Steud.), and a cool-season turfgrass, `Mustang' tall fescue (Festuca arundinacea Schreb.) to determine 1) water relations and drought tolerance characteristics by subjecting container-grown grasses to drought and 2) potential relationships between osmotic adjustment (OA) and turf recovery after severe drought. Tall fescue was clipped at 6.3 cm once weekly, whereas warm-season grasses were clipped at 4.5 cm twice weekly. The threshold volumetric soil water content (SWC) at which a sharp decline in leaf water potential (ψL) occurred was higher for tall fescue than for warm-season grasses. Buffalograss exhibited the lowest and tall fescue exhibited the highest reduction in leaf pressure potential (ψP) per unit decline in ψL during dry down. Ranking of grasses for magnitude of OA was buffalograss (0.84 MPa) = zoysiagrass (0.77 MPa) > bermudagrass (0.60 MPa) > tall fescue (0.34 MPa). Grass coverage 2 weeks after irrigation was resumed was correlated positively with magnitude of OA (r = 0.66, P < 0.05).

Productivity in simulated drought and post-drought recovery of eight ryegrass cultivars and a tall fescue cultivar with and without Epichloë endophyte

2017 ◽  
Vol 68 (2) ◽  
pp. 176 ◽  
Author(s):  
L. He ◽  
C. Matthew ◽  
C. S. Jones ◽  
J.-H. B. Hatier
Keyword(s):  
Drought Tolerance ◽  
Water Deficit ◽  
Tall Fescue ◽  
Festuca Arundinacea ◽  
Irrigation Treatment ◽  
Lower Percentage ◽  
Yield Reduction ◽  
Summer Drought ◽  
Research Information ◽  
Percentage Yield

Many ryegrass cultivars are available on the market, but little research information exists on their comparative drought tolerance or the role of their commercially associated Epichloë endophytes in drought tolerance. Cloned plants of seven perennial ryegrass (Lolium perenne L.) cultivars (Grasslands Commando, Ceres One50, Banquet II, Alto, Bealey, Trojan and Avalon) and an unreleased elite line (URL) and one Mediterranean tall fescue (Festuca arundinacea Schreb.) cultivar (Grasslands Flecha), in all cases both endophyte-free (E–) and -infected (E+) plants, were subjected to a cycle of summer drought and rehydration from December 2012 to May 2013. Other clones of the same plants were irrigated. Insecticide was used to protect plants from insect attack. We report data for shoot dry matter (DM), tiller survival rate (TSR) and reproductive development assessed approximately monthly during the experiment. In the second month of drought, only Banquet II and Grasslands Flecha showed no significant shoot DM reduction under water deficit. After 3 months of drought, shoot DM was reduced by 43% (Flecha) to 85% (URL) compared with irrigated plants. For Banquet II, Avalon and Grasslands Flecha, TSR was not significantly reduced by water deficit. During rehydration, growth of previously non-irrigated plants typically exceeded growth of irrigated clones across all cultivars. Banquet II and Grasslands Flecha were drought-tolerant in the sense that they showed a lower percentage yield reduction under drought than other cultivars tested; this was in part because they were not among the highest yielding under irrigation. Irrespective of irrigation treatment, the shoot DM of E+ plants of ryegrasses URL (with AR37 endophyte) and One50 (with AR1 endophyte) was reduced by almost 50% relative to their E– counterparts in each harvest from December to May, whereas the other six ryegrass varieties generally showed a small trend towards reduced shoot DM as E+ plants. This indicates that some novel cultivar–endophyte associations can incur a yield disadvantage compared with E– plants when protected from insect pressure.

Acremonium Endophyte Effects on Tall Fescue Drought Tolerance

Crop Science ◽  
1992 ◽  
Vol 32 (6) ◽  
pp. 1392-1396 ◽  
Author(s):  
Richard H. White ◽  
Milton C. Engelke ◽  
Sharon J. Morton ◽  
Jennifer M. Johnson‐Cicalese ◽  
Bridget A. Ruemmele
Keyword(s):  
Drought Tolerance ◽  
Tall Fescue

scholarly journals Proteins Involved in Energy Metabolism and Oxidative Regulation Associated with Genotypic Variations in Drought Tolerance for Tall Fescue

2018 ◽  
Vol 143 (3) ◽  
pp. 207-212
Author(s):  
Jianming Sun ◽  
Yiming Liu ◽  
Xianglin Li ◽  
Bingru Huang
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
Tall Fescue ◽  
Photochemical Efficiency ◽  
Grass Species ◽  
Drought Treatment ◽  
Drought Tolerant ◽  
Oxidative Regulation ◽  
Tolerant Genotype ◽  
Adaptation To Drought

Protein metabolism plays an important role in plant adaptation to drought stress. The objective of this study was to identify drought-responsive proteins associated with differential drought tolerance for a tolerant genotype (RU9) and a sensitive genotype (RU18) of tall fescue (Lolium arundinacea). Plants of both genotypes were grown under well-watered conditions or subjected to drought stress by withholding irrigation for 12 days in a growth chamber controlled at the optimal growth temperatures of 23/18 °C (day/night). Physiological analysis demonstrated that RU9 was relatively more drought tolerant than RU18, as shown by the higher leaf net photosynthetic rate (Pn) and photochemical efficiency at 12 days of drought treatment. Differentially expressed proteins between RU9 and RU18 exposed to drought stress were identified by two-dimensional electrophoresis and mass spectrometry (MS). Several proteins [photosystem I reaction center subunit II, Rubisco small subunit, and Glyceraldehyde-3-phosphate dehydrogenase (GADPH)] in photosynthesis, respiration, or oxidative regulation exhibited higher abundance in RU9 than RU18 under drought stress. These results suggested the critical importance of energy and oxidative metabolism in tall fescue adaptation to drought stress. Those abundant proteins in the drought-tolerant genotype could be used as biomarkers or developed to molecular markers to develop elite drought-tolerant germplasm in tall fescue and other cool-season perennial grass species.

Drought-tolerance indices in a tall fescue population and its polycross progenies

2012 ◽  
Vol 63 (4) ◽  
pp. 360 ◽  
Author(s):  
Maryam Ebrahimiyan ◽  
Mohammad Mahdi Majidi ◽  
Aghafakhr Mirlohi ◽  
Mahdi Gheysari
Keyword(s):  
Soil Moisture ◽  
Drought Tolerance ◽  
Tall Fescue ◽  
Moisture Stress ◽  
Forage Yield ◽  
Soil Moisture Stress ◽  
Drought Tolerant ◽  
Second Year ◽  
Drought Tolerance Indices ◽  
Tolerance Indices

Development of drought-tolerant cultivars is hampered by a lack of effective selection criteria. In this research, drought tolerance of 75 genotypes of tall fescue in three sets (25 parental, 25 early, 25 late-flowering progenies) was evaluated under no soil moisture stress and soil moisture stress in the field during 2009 and 2010. Five drought-tolerance indices were calculated: stress tolerance (TOL), mean productivity (MP), geometric mean productivity (GMP), stress susceptibility index (SSI), and stress tolerance index (STI). These calculations were based on forage yield (dry matter basis) under drought (Ys) and non-drought (Yp) conditions. Soil moisture stress caused significant reduction in forage yield. Considerable genetic variation for drought tolerance was found among genotypes. A moderately high relationship was found between Yp and Ys using regression analysis, with a clear relationship in the second year. Indices GMP and STI were found to be valuable aids in the selection of drought-tolerant, high-yielding genotypes. Plots of the first and second principal components identified drought-tolerant genotypes in each set. Results indicated that selection for drought-tolerant genotypes should be planned separately for first year (establishment stage) and second year (productive stage) in tall fescue.

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