Assessment of physiological parameters to determine drought tolerance of plants for extensive green roof architecture in tropical areas

Meetam, Metha; Sripintusorn, Naraporn; Songnuan, Wisuwat; Siriwattanakul, Umaporn; Pichakum, A.

doi:10.1016/j.ufug.2020.126874

Cited by 11 publications

(4 citation statements)

References 21 publications

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“…Drought stress has been shown to reduce the growth of S. portulacastrum by decreasing the leaf relative water content and increasing the proline, K, and Na contents, but rewatering stressed plants restored the plant growth, suggesting that S. portulacastrum retains its growth potential and nutrient absorption during drought stress, enabling it to quickly reestablish growth activity once water becomes available ( Slama et al., 2006 ). After 5 days of drought stress, S. portulacastrum was able to allow more than 80% of stomatal opening ( Meetam et al., 2020 ). Glycine betaine (GB), a quaternary amine with a zwitterionic nature, functions as an osmotic regulator under environmental stresses, including drought stress ( Chen and Murata, 2008 ).…”

Section: Tolerance To Abiotic and Biotic Stressesmentioning

confidence: 99%

Exploring the potentials of Sesuvium portulacastrum L. for edibility and bioremediation of saline soils

Zhang,

Wang,

Cao

et al. 2024

Front. Plant Sci.

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Sesuvium portulacastrum L. is a flowering succulent halophyte in the ice plant family Aizoaceae. There are various ecotypes distributed in sandy coastlines and salty marshlands in tropical and subtropical regions with the common name of sea purslane. These plants are tolerant to salt, drought, and flooding stresses and have been used for the stabilization of sand dunes and the restoration of coastal areas. With the increased salinization of agricultural soils and the widespread pollution of toxic metals in the environment, as well as excessive nutrients in waterbodies, S. portulacastrum has been explored for the desalination of saline soils and the phytoremediation of metals from contaminated soils and nitrogen and phosphorus from eutrophic water. In addition, sea purslane has nutraceutical and pharmaceutical value. Tissue analysis indicates that many ecotypes are rich in carbohydrates, proteins, vitamins, and mineral nutrients. Native Americans in Florida eat it raw, pickled, or cooked. In the Philippines, it is known as atchara after being pickled. S. portulacastrum contains high levels of ecdysteroids, which possess antidiabetic, anticancer, and anti-inflammatory activities in mammals. In this review article, we present the botanical information, the physiological and molecular mechanisms underlying the tolerance of sea purslane to different stresses, its nutritional and pharmaceutical value, and the methods for its propagation and production in saline soils and waterbodies. Its adaptability to a wide range of stressful environments and its role in the production of valuable bioactive compounds suggest that S. portulacastrum can be produced in saline soils as a leafy vegetable and is a valuable genetic resource that can be used for the bioremediation of soil salinity and eutrophic water.

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Section: Tolerance To Abiotic and Biotic Stressesmentioning

confidence: 99%

Exploring the potentials of Sesuvium portulacastrum L. for edibility and bioremediation of saline soils

Zhang,

Wang,

Cao

et al. 2024

Front. Plant Sci.

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“…Meetam et al found that physiological parameters are helpful to evaluate the drought resistance of ground cover plants. Through the determination of physiological parameters, S. portulacastrum and C. repens are considered to be suitable for extensive green roof plants in tropical areas [41]. Combined with plant physiological parameters and comprehensive evaluation, the performance of each The weight of the five formula substrates is shown in Fig.…”

Section: Author Copy • Author Copy • Author Copy • Author Copy • Auth...mentioning

confidence: 99%

A Preliminary Exploration of Different Planting Combinations of Extensive Green Roof in Warm Temperate Semi Humid Climate Zone

Li¹,

Zhang²,

Chen³

et al. 2022

Pol. J. Environ. Stud.

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The construction methods of extensive green roof are different in different regional climate conditions, which are directly affected by weight load bearing capacity, planting substrate, plant species and other factors. In order to explore the planting types of extensive green roof suitable for warm temperate semi humid region, 12 plant species and 5 planting substrates were selected to conduct the experiment on the roof of the Architectural Art Museum (36°40'37"N, 117°11'25"E) of Shandong Jianzhu University, Licheng District, Jinan City, Shandong Province, China in March to October in 2019, and each plant species was planted on 5 planting substrates on the roof, respectively. By measuring the basic foundation layer load parameters, substrate bulk density and plant unit weight in the process of construction, the increase of planting weight load bearing capacity was calculated. After 4 weeks, the plant physiological indexes were tested. Finally, based on fuzzy mathematics subordinate function value method, combined with the plant physiological indexes, all combination types were comprehensively evaluated. The results showed that the unit weight of 12 plant species was divided into three categories, and the change trend of the weight load bearing capacity increase of each plant combined with the five planting substrates was similar to that of the five planting substrates. According to the comprehensive evaluation, 12 planting combinations were considered to be suitable for application on the extensive green roofs in warm temperate semi-humid areas. Compared with the plant weight, in the early stage of extensive green roof construction, the weight of planting substrate is the main factor leading to the change of weight load bearing capacity increase.

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“…On the first day of the experiment, 20 uniform plants of each species were divided into 2 groups. Plants in the first group were moved under a transparent plastic shelter in order to prevent them from being irrigated by the overhead sprinkler, forming the waterdeficient treatment or non-irrigated rooftop model [33]. Plants in the other group remained exposed to daily watering from the overhead sprinkler, forming the control or well-watered treatment.…”

Section: Environmental Conditionsmentioning

confidence: 99%

Evaluating the Drought Endurance of Landscaping Ground Cover Plants in a Roof Top Model

Pichakum

2021

Horticulturae

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Vegetative ground covers are commonly used in urban, tropical roadside gardens. Such landscaping ground covers usually encounter extreme water-deficits and high temperatures from vehicles and urban infrastructures. However, information about the plant species that are appropriate for low maintenance gardens is not available, especially in tropical areas. This study aimed to investigate potential indicators for evaluating plant tolerance to water-deficit situations. A non-irrigated rooftop model was used to test 25 commercial ground cover species in a greenhouse at Mahidol University, Nakhon Pathom Province, Thailand. Each of these 25 species was potted and subjected to one of two conditions: with or without irrigation for 7 days. Physiological responses relevant to plant endurance during water-deficits were monitored, including changes in leaf relative water content (RWC), percent stomatal opening, leaf surface temperature, leaf total chlorophyll content, leaf greenness, maximum quantum yield, and light quantum yield. Moreover, an additional indicator of landscape utility was evaluated, where each species was judged by trained panelists for their esthetic appeal. Diverse responses were observed based on the type of physiological parameter measured, plant species, and duration of drought conditions. Water withdrawal for three days was deemed an appropriate time to determine plant tolerance to water-deficit conditions, as signs of stress were clearly observed in three parameters, i.e., changes in leaf RWC, percent stomatal opening, and esthetic score. Lastly, cluster analysis revealed that seven plant species were appropriate for tropical, urban ground covers, as they had high endurance under water-deficit conditions, namely, Allium schoenoprasum,Liriope muscari, Aloe sp., Sedum x rubrotinctum, Alternanthera ficoidea, Pilea libanensis and Plectranthus scutellarioides.

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Assessment of physiological parameters to determine drought tolerance of plants for extensive green roof architecture in tropical areas

Cited by 11 publications

References 21 publications

Exploring the potentials of Sesuvium portulacastrum L. for edibility and bioremediation of saline soils

Exploring the potentials of Sesuvium portulacastrum L. for edibility and bioremediation of saline soils

A Preliminary Exploration of Different Planting Combinations of Extensive Green Roof in Warm Temperate Semi Humid Climate Zone

Evaluating the Drought Endurance of Landscaping Ground Cover Plants in a Roof Top Model

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