Comparative Effects of Salt Stress and Extreme pH Stress Combined on Glycinebetaine Accumulation, Photosynthetic Abilities and Growth Characters of Two Rice Genotypes

Cha–um, Suriyan; Supaibulwattana, Kanyaratt; Kirdmanee, Chalermpol

doi:10.1016/s1672-6308(08)60091-8

Cited by 87 publications

(78 citation statements)

References 54 publications

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“…The production of CH 4 declines when pH exceeds 8 [36]. The emission capacity of CH 4 almost disappears when pH is less than 5.75 or more than 8.75 [37]. In comparison, the effect of pH on N 2 O emission is complex.…”

Section: Influence Factors Of Ghg Emissionmentioning

confidence: 99%

Emission Laws and Influence Factors of Greenhouse Gases in Saline-Alkali Paddy Fields

Tang

Liang

et al. 2016

Sustainability

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Abstract:The study of greenhouse gas emissions has become a global focus, but few studies have considered saline-alkali paddy fields. Gas samples and saline-alkali soil samples were collected during the green, tillering, booting, heading and grain filling stages. The emission fluxes of CO 2 , CH 4 , and N 2 O as well as the pH, soil soluble salt, available nitrogen, and soil organic carbon contents were detected to reveal the greenhouse gas (GHG) emission laws and influence factors in saline-alkali paddy fields. Overall, GHG emissions of paddy soil during the growing season increased, then decreased, and then increased again and peaked at booting stage. The emission fluxes of CO 2 and CH 4 were observed as having two peaks and a single peak, respectively. Both the total amount of GHG emission and its different components of CO 2 , CH 4 , and N 2 O increased with the increasing reclamation period of paddy fields. A positive correlation was found between the respective emission fluxes of CO 2 , CH 4 , and N 2 O and the available nitrogen and SOC, whereas a negative correlation was revealed between the fluxes of CO 2 , CH 4 , and N 2 O and soil pH and soil conductivity. The study is beneficial to assessing the impact of paddy reclamation on regional greenhouse gas emissions and is relevant to illustrating the mechanisms concerning the carbon cycle in paddy soils.

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Section: Influence Factors Of Ghg Emissionmentioning

confidence: 99%

Emission Laws and Influence Factors of Greenhouse Gases in Saline-Alkali Paddy Fields

Tang

Liang

et al. 2016

Sustainability

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“…The optical density of the cultures was recorded at 600 nm by a spectrophotometer (CECIL CE 7200, Cecil Instruments Limited, Cambridge, UK). Proline analysis of bacterial strains grown under salt stress was also accomplished by following the method of Cha-Um and Kirdmanee [22].…”

Section: Halophility Assaymentioning

confidence: 99%

Halotolerant Bacterial Diversity Associated with Suaeda fruticosa (L.) Forssk. Improved Growth of Maize under Salinity Stress

Aslam

Ali

2018

Agronomy

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Abstract:Halotolerant bacterial strains associated with the rhizosphere and phytoplane of Suaeda fruticosa (L.) Forssk. growing in saline habitats were isolated to mitigate the salinity stress of Zea mays L. 16S rRNA gene sequencing confirmed the presence of strains that belong to Gracilibacillus, Staphylococcus, Virgibacillus, Salinicoccus, Bacillus, Zhihengliuella, Brevibacterium, Oceanobacillus, Exiguobacterium, Pseudomonas, Arthrobacter, and Halomonas genera. Strains were screened for auxin production, 1-aminocyclopropane-1-carboxylate (ACC)-deaminase, and biofilm formation. Bacterial auxin production ranged from 14 to 215 µg mL −1 . Moreover, several bacterial isolates were also recorded as positive for ACC-deaminase activity, phosphate solubilization, and biofilm formation. In pot trials, bacterial strains significantly mitigated the salinity stress of Z. mays seedlings. For instance, at 200 and 400 mM NaCl, a significant increase of shoot and root length (up to onefold) was recorded for Staphylococcus jettensis F-11. At 200 mM, Zhihengliuella flava F-9 (45%) and Bacillus megaterium F-58 (42%) exhibited significant improvements for fresh weight. For dry weight, S. jettensis F-11 and S. arlettae F-71 recorded up to a threefold increase at 200 mM over the respective control. The results of this study suggest that natural plant settings of saline habitats are a good source for the isolation of beneficial salt-tolerant bacteria to grow crops under saline conditions.

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“…Lead toxicity to plants has been widely investigated (Jiang et al, 2014;Cha-Um et al, 2009;Sharma et al, 2005). Pb is not an essential element for plants, but it can be absorbed by the roots of crop and transported to shoots, and enter the food chain.…”

Section: Introductionmentioning

confidence: 99%

“…High proline contents may protect plants from environmental stress. Higher activities of antioxidant enzymes, such as SOD, POD, CAT and APX, and higher proline contents are associated with a higher tolerance to abiotic stress in most plants (Cha-Um et al, 2009;Lamhamdi et al, 2011;Verma et al, 2003;Huang et al, 2014). Longan is a famous and delicious fruit in subtropical areas, and it is primarily grown in South China (Qiu, 2014).…”

Section: Introductionmentioning

confidence: 99%

Gas exchange, photosystem II photochemistry, and the antioxidant system of longan plant (Dimocarpus longan Lour.) leaves in response to lead (Pb) stress

Wang¹,

Li²,

Ma³

et al. 2016

Plant Omics

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Longan is one of the most important subtropical fruit trees and a famous special product in south China. Increased fruit demand brings longan cultivation to Pb-affected regions. Seedlings of longan (cv. Wulongling) in pots with sands were irrigated daily for 30 d with a freshly prepared nutrient solution containing different concentrations of Pb(NO 3 ) 2 (0, 100 , 200 , 400 , 600 , 800 and 1000 mg L -1 ) to determine physiological and biochemical responses of longan seedlings to various levels of lead (Pb). The results indicated that Pb stress substantially inhibited the growth of longan plants and markedly declined in their dry biomass. However, when the plants were grown at 100 mg L -1 Pb, the growth and dry biomass of the plants showed no significant difference from control. In addition, the chlorophyll a fluorescence and gas exchange parameters were correlated with the growth and yield response. Pb treatments increased the minimum fluorescence (Fo) and caused a decrease in maximum fluorescence (Fm), variable fluorescence (Fv), the maximum quantum efficiency of PSII photochemistry (Fv/Fm), trapped energy flux per cross section (CS) at t=0 (TRo/CSo), electron transport flux per CS at t=0 (ETo/CSo), dissipated energy flux per CS at t=0(DIo/CSo), and the amount of active PSII reaction centers (RCs) per CS at t = 0 (RC/CSo). Furthermore, Pb stress led to decreases in the protein contents, the activity of peroxidase (POD, EC 1.11.1.7) and the accumulation of proline and malondialdehyde (MDA), and enhanced superoxide dismutase activity (SOD, EC 1.15.1.1), whereas catalase (CAT, EC 1.11.1.6) and ascorbate peroxidase (APX,EC 1.11.1.11) were enhanced at low Pb levels and decreased under high Pb stress. Nonetheless, these changes were closely related to the severity of the Pb stress.

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Comparative Effects of Salt Stress and Extreme pH Stress Combined on Glycinebetaine Accumulation, Photosynthetic Abilities and Growth Characters of Two Rice Genotypes

Cited by 87 publications

References 54 publications

Emission Laws and Influence Factors of Greenhouse Gases in Saline-Alkali Paddy Fields

Emission Laws and Influence Factors of Greenhouse Gases in Saline-Alkali Paddy Fields

Halotolerant Bacterial Diversity Associated with Suaeda fruticosa (L.) Forssk. Improved Growth of Maize under Salinity Stress

Gas exchange, photosystem II photochemistry, and the antioxidant system of longan plant (Dimocarpus longan Lour.) leaves in response to lead (Pb) stress

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