Photosynthetic efficiency of Microcystis ssp. under salt stress

2021 ◽  
pp. 104459
Author(s):  
Piotr Dąbrowski ◽  
Aneta H. Baczewska-Dąbrowska ◽  
Filippo Bussotti ◽  
Martina Pollastrini ◽  
Kazimierz Piekut ◽  
...  
Keyword(s):  
Salt Stress ◽  
Photosynthetic Efficiency

scholarly journals Ethylene Supplementation Combined with Split Application of Nitrogen and Sulfur Protects Salt-Inhibited Photosynthesis through Optimization of Proline Metabolism and Antioxidant System in Mustard (Brassica juncea L.)

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1303
Author(s):  
Badar Jahan ◽  
Noushina Iqbal ◽  
Mehar Fatma ◽  
Zebus Sehar ◽  
Asim Masood ◽  
...  
Keyword(s):  
Salt Stress ◽  
Brassica Juncea ◽  
Antioxidant System ◽  
Photosynthetic Efficiency ◽  
Growth Potential ◽  
Proline Metabolism ◽  
Sowing Time ◽  
Stress Effects ◽  
Nutrient Assimilation ◽  
S Application

In the present study, the potential of ethylene as ethephon (an ethylene source) was investigated individually and in combination with split doses of nitrogen (N) and sulfur (S) soil treatments for removal of the damaging effects of salt stress (100 mM NaCl) in mustard (Brassica juncea L.). Plants were grown with 50 mg N plus 50 mg S kg−1 soil at sowing time and an equivalent dose at 20 days after sowing [N50 + S50]0d and 20d. Ethephon at 200 μL L‒1 was applied to combined split doses of N and S with or without NaCl. Plants subjected to NaCl showed a decrease in growth and photosynthetic characteristics as well as N and S assimilation, whereas proline metabolism and antioxidants increased. The application of ethephon to plants grown with split N and S doses significantly enhanced photosynthetic efficiency by increasing the assimilation of N and S, improving the concentration of proline and induction of the antioxidant system with or without NaCl. The regulation of ethylene and/or split forms of N and S application may be potential tools for not just overcoming salt stress effects in this species and in related Brassicaceae but also enhancing their photosynthesis and growth potential through increased nutrient assimilation.

scholarly journals Ethylene Supplementation Combined with Split Application of Nitrogen and Sulfur Protects Salt-Inhibited Photosynthesis through Optimization of Proline Metabolism and Antioxidant System in Mustard (Brassica juncea L.)

2021 ◽  
Author(s):  
Badar Jahan ◽  
Mehar Fatma ◽  
Zebus Sehar ◽  
Asim Masood ◽  
Adriano Sofo ◽  
...  
Keyword(s):  
Salt Stress ◽  
Brassica Juncea ◽  
Antioxidant System ◽  
Photosynthetic Efficiency ◽  
Proline Metabolism ◽  
Split Application ◽  
Sowing Time ◽  
Stress Effects ◽  
S Application ◽  
Split Form

In the present study, the potential of ethylene as ethephon (an ethylene source) was investigated individually or with a combination of the split dosage of nitrogen (N) and sulfur (S) soil treatments for the removal of damaging effects of salt stress (100 mM NaCl) in mustard (Brassica juncea L.). Plants were grown with 50 mg N plus 50 mg S kg−1 soil at sowing time and an equivalent dosage at 20 days after sowing ([N50 + S50]0d + [N50 + S50]20d). Ethephon at 200 μL L‒1 was applied to combined split dosage of N and S with or without NaCl. Plants subjected to NaCl showed a deceased in growth and photosynthetic characteristics as well as N and S assimilation, though, proline metabolism and antioxidants increased. The application of ethephon to plants grown with split N and S dosages significantly enhanced the photosynthetic efficiency by increasing the assimilation of N and S, improving the content of proline and induction of the antioxidant system with or without NaCl. The regulation of ethylene and/or split form N and S application may be the potential tools for overcoming salt stress effects in this species and in related Brassicaceae.

Seed priming with H2O2 improves photosynthetic efficiency and biomass production in sunflower plants under salt stress

2021 ◽  
pp. 1-15
Author(s):  
Petterson Costa Conceição Silva ◽  
A. D. Azevedo Neto ◽  
H. R. Gheyi ◽  
R. F. Ribas ◽  
C. R. R. Silva ◽  
...  
Keyword(s):  
Salt Stress ◽  
Biomass Production ◽  
Photosynthetic Efficiency ◽  
Seed Priming

scholarly journals Responses of Photosynthetic Efficiency and Ascorbate Peroxidase Induced by Salt Stress in Rice (Oryza sativa L.)

2010 ◽  
Vol 20 (8) ◽  
pp. 1173-1180
Author(s):  
Jeung-Suk Koo ◽  
Kyoung-Nam Im ◽  
Hyun-Sik Chun ◽  
Chin-Bum Lee
Keyword(s):  
Oryza Sativa ◽  
Salt Stress ◽  
Ascorbate Peroxidase ◽  
Photosynthetic Efficiency ◽  
Oryza Sativa L

scholarly journals 24-Epibrassinolide supplemented with silicon enhances the photosynthetic efficiency of Brassica juncea under salt stress

2018 ◽  
Vol 118 ◽  
pp. 120-128 ◽  
Author(s):  
H. Siddiqui ◽  
M. Yusuf ◽  
A. Faraz ◽  
M. Faizan ◽  
F. Sami ◽  
...  
Keyword(s):  
Salt Stress ◽  
Brassica Juncea ◽  
Photosynthetic Efficiency

scholarly journals Ability of Modified Spectral Reflectance Indices for Estimating Growth and Photosynthetic Efficiency of Wheat under Saline Field Conditions

Agronomy ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 35 ◽  
Author(s):  
Salah El-Hendawy ◽  
Nasser Al-Suhaibani ◽  
Yaser Dewir ◽  
Salah Elsayed ◽  
Majed Alotaibi ◽  
...  
Keyword(s):  
Salt Stress ◽  
Spectral Reflectance ◽  
Photosynthetic Efficiency ◽  
Near Infrared ◽  
Field Conditions ◽  
Physiological Status ◽  
Dry Matter Content ◽  
Reflectance Indices ◽  
Non Destructive ◽  
Spectral Reflectance Indices

Hyperspectral sensing offers a quick and non-destructive alternative for assessing phenotypic parameters of plant physiological status and salt stress tolerance. This study compares the performance of published and modified spectral reflectance indices (SRIs) for estimating and predicting the growth and photosynthetic efficiency of two wheat cultivars exposed to three salinity levels (control, 6.0, and 12.0 dS m−1). Results show that individual SRIs based on visible- and near-infrared (VIS/VIS, NIR/VIS, and NIR/NIR) estimate and predict measured parameters considerably more efficiently than those based on shortwave-infrared (SWIR/VIS and SWIR/NIR), with the exception of some modified indices (the water balance index (WABI-1(1550, 482), WABI-2(1640, 482), and WABI-3(1650, 531)), normalized difference moisture index (NDMI(1660, 1742)), and dry matter content index (DMCI(1550, 2305)), which show moderate to strong relationships with measured parameters. Overall results indicate that modified SRIs can serve as rapid and non-destructive high-throughput alternative approaches for tracking growth and photosynthetic efficiency of wheat under salt stress field conditions.

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