Turfgrasses Responded Differently to Salinity, Waterlogging, and Combined Saline–Waterlogging Conditions

Qi, Zhang; Zuk, Alan J.; Rue, Kevin

doi:10.2135/cropsci2012.12.0695

Cited by 7 publications

(2 citation statements)

References 20 publications

(41 reference statements)

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“…Tall fescue is an important grass seed crop in the Willamette Valley, and is one of the crops that is often invaded by RB. Tall fescue is relatively more tolerant to waterlogging than some other turf grasses species such as Kentucky bluegrass ( Poa pratensis ) [ 48 , 49 ]. This study was conducted to compare the relative waterlogging tolerance between RB and tall fescue.…”

Section: Introductionmentioning

confidence: 99%

Comparison of growth and physiological characteristics between roughstalk bluegrass and tall fescue in response to simulated waterlogging

Hulting

Mallory‐Smith

2017

PLoS ONE

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Roughstalk bluegrass (Poa trivialis) is a weed in cool season grass seed production fields in Oregon. Populations of this weed are often greater in fields prone to waterlogging. A greenhouse study was conducted to investigate the morphological and physiological differences between recently established roughstalk bluegrass and tall fescue (Lolium arundinaceum) plants in response to simulated waterlogging. Differences in root morphological development and root respiration were found between waterlogged tall fescue and roughstalk bluegrass. Plants after 4 weeks of waterlogging, leaf number, plant height, and root biomass were reduced more in tall fescue than in roughstalk bluegrass plants. The root length increased 6% in waterlogged tall fescue plants, and decreased 42% in waterlogged roughstalk bluegrass plants, which lead to a shallower root system in roughstalk bluegrass. Root aerenchyma area increased more in waterlogged roughstalk bluegrass than in tall fescue. Alcohol dehydrogenase and lactate dehydrogenase activities increased in the roots of both species, but not in the leaves. The increases were greater in tall fescue than in roughstalk bluegrass. Turf quality, aboveground biomass, photosynthetic capacity, and water-soluble carbohydrate concentrations were reduced by waterlogging, but there were no differences over time or species. Thus, the shallower root system, larger aerenchyma, and reduced fermentation rates were the characteristics most likely to contribute to better waterlogging tolerance in roughstalk bluegrass compared to tall fescue and invasion of roughstalk bluegrass in waterlogged cool season grass seed fields.

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Section: Introductionmentioning

confidence: 99%

Comparison of growth and physiological characteristics between roughstalk bluegrass and tall fescue in response to simulated waterlogging

Hulting

Mallory‐Smith

2017

PLoS ONE

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“…Liu et al (2017) reported that after 4 weeks of waterlogging, leaf number and plant height were reduced both in tall fescue and roughstalk bluegrass [Poa trivialis (Liu et al, 2017)]. However, Zhang et al (2013) reported that the waterlogging treatment significantly increased shoot dry weight in tall fescue and kentucky bluegrass (Poa pratensis). Cardoso et al (2013) investigated 12 Brachiaria humidicola germplasm accessions and found that some accessions increased their shoot dry mass, whereas others showed a reduction of shoot dry mass under waterlogged conditions.…”

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confidence: 99%

Morphological and Physiological Responses of Seashore Paspalum and Bermudagrass to Waterlogging Stress

Xiao¹,

Jespersen²

2019

J. Amer. Soc. Hort. Sci.

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Turfgrasses have varying tolerance to waterlogging conditions. The objective of this study was to identify important root traits and physiological responses to waterlogging stress in seashore paspalum (Paspalum vaginatum) and bermudagrass (Cynodon sp.). After being exposed to waterlogging conditions for 28 days, turf quality, leaf photosynthesis, transpiration rate, stomatal conductance (gS), and root fresh weight were significantly decreased in bermudagrass, and root lipid peroxidation was significantly increased. However, seashore paspalum was found to be more tolerant to waterlogging conditions and changes in turf quality, photosynthesis, or lipid peroxidation were not seen. The waterlogging treatments increased specific root length (SRL), surface area, and volume and decreased root respiration and diameter to a greater extent in seashore paspalum compared with bermudagrass. Under waterlogging conditions, root aerenchyma formation was found in both seashore paspalum and bermudagrass, but to a greater extent in seashore paspalum. Both grasses exhibited significant increases in root water-soluble carbohydrate (WSC) but to a lesser extent in seashore paspalum than in bermudagrass. Shoot WSC remained unchanged in seashore paspalum but was significantly increased in bermudagrass. These results indicate greater root morphological changes such as root volume, SRL, and root porosity, as well as lower root respiration may be important contributors to waterlogging tolerance for seashore paspalum.

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Variability among Festuca arundinacea cultivars for tolerance to and recovery from waterlogging, salinity and their combination

et al. 2021

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Frequency and intensity of floods and the extent of salt-affected lands are expected to increase in pastures and grassland ecosystems as a result of global climate change. This study evaluated the effects of waterlogging, salinity (150 mm NaCl, ~15 dS m–1) and their combination over 14 days of treatment on morphological and growth traits of seven cultivars of Festuca arundinacea (tall fescue). Recovery was also assessed after a 14-day growth period under aerated, non-saline conditions (recovery phase). All cultivars survived the imposed stresses, showing greater tolerance to waterlogging than to salinity or the combined stress, evaluated as a response ratio of total dry mass relative to the control. The combined stress provoked growth lower than predicted by a multiplicative model in one cultivar, growth equal to the model in three cultivars and growth higher than the model in three cultivars. High variability among cultivars in response to each stress and phase was observed; this was more evident for relative growth rate of roots than of shoots. Plant morphological traits were affected by treatments in different ways; mature tiller weight was maintained, and tiller number decreased by 79–71% under waterlogging and combined stresses, whereas the opposite responses occurred under salinity. During the recovery phase, plants in all stress treatments had lower tiller numbers than controls and prioritised the growth of pre-existing tillers, which were heavier. Number of dead leaves per plant increased in saline and combined treatments. In general, F. arundinacea proved more tolerant to waterlogging than to salinity or combined treatments, and showed promising variability among cultivars with respect to root relative growth rate under the evaluated stresses, which can be used in future breeding programs. The findings also provide a basis for further research into the tolerance mechanisms involved.

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Turfgrasses Responded Differently to Salinity, Waterlogging, and Combined Saline–Waterlogging Conditions

Cited by 7 publications

References 20 publications

Comparison of growth and physiological characteristics between roughstalk bluegrass and tall fescue in response to simulated waterlogging

Comparison of growth and physiological characteristics between roughstalk bluegrass and tall fescue in response to simulated waterlogging

Morphological and Physiological Responses of Seashore Paspalum and Bermudagrass to Waterlogging Stress

Variability among Festuca arundinacea cultivars for tolerance to and recovery from waterlogging, salinity and their combination

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