Growth and physiological responses of two phenotypically distinct accessions of centipedegrass (Eremochloa ophiuroides (Munro) Hack.) to salt stress

Li, JianJian; Ma, Jun; Guo, Hailin; Zong, Jingfeng; Wang, Yi; Li, Dandan; Li, Ling; Wang, Jingjing; Liu, Jianxiu

doi:10.1016/j.plaphy.2018.02.018

Cited by 31 publications

(14 citation statements)

References 47 publications

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“…Chlorophyll loss under salinity can be related to saltinduced activity of chlorophyllase, an enzyme that acts in the process of degradation of this molecule (Taiz et al, 2015), and reduction in chlorophyll concentration can reduce the commercial value of ornamental plants (Toscano et al, 2018). In this study, the chlorophyll index was severely affected in C. roseus (Figure 3), which was visually observed at 60 DAST, and this effect can explain, at least in part, the greater reduction in the photosynthesis rate in this species (Bacha et al, 2017;Li et al, 2018). On the other hand, chlorophyll index decreased linearly for other species, with little difference among them.…”

Section: Resultsmentioning

confidence: 49%

“…Some authors have found positive correlation between proline accumulation and salt tolerance of plants (Kaur & Asthir, 2015;García-Caparrós et al, 2016;García-Caparrós & Lao, 2018;Li et al, 2018). Accumulation of proline could be due to synthesis, decreased degradation, lower utilization, or hydrolysis of proteins, and it contributes to stabilization of sub-cellular structures, scavenging free radicals, and buffering cellular redox potential (Kaur & Asthir, 2015).…”

Section: Resultsmentioning

confidence: 99%

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Morphophysiological responses and mechanisms of salt tolerance in four ornamental perennial species under tropical climate

Lacerda

Oliveira

Neves

et al. 2020

Rev. bras. eng. agríc. ambient.

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Salinity affects growth and quality of ornamental plants, but studies on mechanisms of salt tolerance in these plants are scarce, particularly under tropical climate conditions. Thus, the morphophysiological leaf responses of four tropical ornamental species were studied, in order to identify the mechanisms involved in the tolerance to salinity and their potentials to be irrigated with brackish water. The research was conducted in a greenhouse using a completely randomized block design, in a 10 x 4 factorial scheme, with four repetitions. The treatments consisted of ten levels of electrical conductivity of irrigation water (0.5; 1.0; 2.0; 3.0; 4.0; 5.0; 6.0; 8.0; 10.0 and 12.0 dS m-1) and four ornamental tropical species (Catharanthus roseus, Allamanda cathartica, Ixora coccinea, and Duranta erecta). At 30 and 60 days after the beginning of saline treatments (DAST), measurements of leaf gas exchange and chlorophyll index were performed. At 60 DAST, leaf area, specific leaf area, leaf area ratio, leaf succulence, Na+ and proline concentrations were measured. The physiological and morphophysiological responses of the leaves indicate that I. coccinea species has high capacity to grow under irrigation with saline water. Its higher tolerance to salinity is related to the lower concentration of Na+ in the leaves. Conversely, the sensitivity of D. erecta was associated with high Na+ and proline concentrations in leaves. The leaf concentration of proline showed to be an indicator more related to the sensitivity of ornamental plants to salt stress; however this relationship should not be generalized for all ornamental species studied.

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Section: Resultsmentioning

confidence: 49%

Section: Resultsmentioning

confidence: 99%

Morphophysiological responses and mechanisms of salt tolerance in four ornamental perennial species under tropical climate

Lacerda

Oliveira

Neves

et al. 2020

Rev. bras. eng. agríc. ambient.

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“…Osmoregulation substances in plants include proline, soluble sugar, and soluble protein. Li et al (2018) found that the free proline content of Eremochloa opiuroides (Munro) increased significantly under salt stress, and that the variation in soluble protein was closely related to the tolerance degree of salt stress. The content of soluble protein in salt-tolerant cultivars increased significantly, but that in salt-sensitive cultivars decreased significantly.…”

Section: Discussionmentioning

confidence: 96%

Physiological Responses of Turnip (Brassica rapa L. subsp. rapa) Seedlings to Salt Stress

Jia¹,

Yan²,

Yan³

et al. 2020

horts

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Turnip (Brassica rapa L. subsp. rapa) is a type of root vegetable belonging to the Brassica subspecies of Cruciferae. Salt stress is one of the main abiotic stresses that causes water deficit, ion toxicity, and metabolic imbalance in plants, seriously limiting plant growth and crop yield. Two commercial turnip cultivars, Wenzhoupancai and Qiamagu, were used to evaluate the seed germination and physiological responses of turnip seedlings to salt stress. NaCl was used to simulate salt stress. Parameters of seed germination, seedling growth, osmoregulation substances content, chlorophyll content, antioxidant enzyme activity, and other physiological parameters of turnip seedlings were measured after 7 days of salt stress. The results showed that salt stress reduced the seed germination rate, and that the seeds of ‘Wenzhoupancai’ were more sensitive to salt stress. Salt stress inhibited the growth of turnip seedlings. With the increased NaCl concentration, the seedling dry weight, seedling fresh weight, and seedling length of turnip decreased gradually. Under the salt stress treatment, the osmotic regulatory substances and antioxidant enzyme activity in the seedlings of turnip increased significantly. The chlorophyll content increased at a lower NaCl level, but it decreased when the level of NaCl was higher. Growth parameters of turnip seedlings had significant negative correlations with the reactive oxygen content, osmoregulation substances, and antioxidant enzyme activities, but they had positive correlations with chlorophyll b and total chlorophyll content. These results indicated that salt stress-induced oxidative stress in turnip is mainly counteracted by enzymatic defense systems.

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“…including Chl a and Chl b in centipedegrass (Eremochloa ophiuroides (Munro) Hack.) [26]. This implies that the photosynthetic process was probably affected by salt stress via inducing Chl decomposition in turfgrass leaves.…”

Section: Salt Stressmentioning

confidence: 99%

Mechanisms of Environmental Stress Tolerance in Turfgrass

et al. 2020

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Turfgrasses constitute a vital part of the landscape ecological systems for sports fields, golf courses, home lawns and parks. However, turfgrass species are affected by numerous abiotic stresses include salinity, heat, cold, drought, waterlogging and heavy metals and biotic stresses such as diseases and pests. Harsh environmental conditions may result in growth inhibition, damage in cell structure and metabolic dysfunction. Hence, to survive the capricious environment, turfgrass species have evolved various adaptive strategies. For example, they can expel phytotoxic matters; increase activities of stress response related enzymes and regulate expression of the genes. Simultaneously, some phytohormones and signal molecules can be exploited to improve the stress tolerance in turfgrass. Generally, the mechanisms of the adaptive strategies are integrated but not necessarily the same. Recently, metabolomic, proteomic and transcriptomic analyses have revealed plenty of stress response related metabolites, proteins and genes in turfgrass. Therefore, the regulation mechanism of turfgrass’s response to abiotic and biotic stresses was further understood. However, the specific or broad-spectrum related genes that may improve stress tolerance remain to be further identified. Understanding stress response in turfgrass species will contribute to improve stress tolerance of turfgrass.

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Growth and physiological responses of two phenotypically distinct accessions of centipedegrass (Eremochloa ophiuroides (Munro) Hack.) to salt stress

Cited by 31 publications

References 47 publications

Morphophysiological responses and mechanisms of salt tolerance in four ornamental perennial species under tropical climate

Morphophysiological responses and mechanisms of salt tolerance in four ornamental perennial species under tropical climate

Physiological Responses of Turnip (Brassica rapa L. subsp. rapa) Seedlings to Salt Stress

Mechanisms of Environmental Stress Tolerance in Turfgrass

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