Amelioration of salt stress tolerance in rapeseed (Brassica napus) cultivars by seed inoculation with Arthrobacter globiformis

2020 ◽  
pp. 1-12
Author(s):  
Panaiotis M. Stassinos ◽  
Massimiliano Rossi ◽  
Ilaria Borromeo ◽  
Concetta Capo ◽  
Simone Beninati ◽  
...  
Keyword(s):  
Salt Stress ◽  
Brassica Napus ◽  
Stress Tolerance ◽  
Arthrobacter Globiformis ◽  
Salt Stress Tolerance ◽  
Seed Inoculation

scholarly journals The Potentiality of Marine Macro-Algae as Bio-Fertilizers to Improve the Productivity and Salt Stress Tolerance of Canola (Brassica napus L.) Plants

Agronomy ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 146 ◽  
Author(s):  
Hashem H.A. ◽  
Mansour H.A. ◽  
El-Khawas S.A. ◽  
Hassanein R.A.
Keyword(s):  
Salt Stress ◽  
Brassica Napus ◽  
Stress Tolerance ◽  
Growth And Yield ◽  
Phytochemical Analysis ◽  
Salt Stress Tolerance ◽  
Brassica Napus L ◽  
Indole Butyric Acid ◽  
Total Carbohydrates ◽  
The Impact

The present study aimed to evaluate the potentiality of three seaweeds, which belong to different algal taxa (green alga Ulva lactuca Linnaeus, brown alga Cystoseira spp., and red alga Gelidium crinale (Hare ex Turner) Gaillon) as bio-fertilizers to improve the growth and yield of canola (Brassica napus L.) plants under greenhouse conditions. Furthermore, the impact of seaweeds in alleviating the effects of salt stress (75 and 150 mM NaCl) on canola plants was also investigated. The three examined seaweeds (applied as soil amendments) successfully alleviated the harmful effects of salinity on canola plants by significantly reducing the inhibition of chlorophyll a, b, total carbohydrate accumulation, and growth promoting hormones, while increasing antioxidative compounds, such as phenols, flavonoids, anthocyanin, and osmoprotectants, including total carbohydrates and proline. Phytochemical analysis of the three examined seaweeds suggests that their stimulatory effect on growth and productivity under normal and salinity growth conditions may be linked to their constituents of a wide variety of growth promotive hormones, including indole acetic acid, indole butyric acid, gibberellic acid, cytokinins, total carbohydrates, and phenolic compounds. U. lactuca was found to be the best candidate to be used as a bio-fertilizer to improve canola growth, yield, and salt stress tolerance.

High accumulation of anthocyanins via the ectopic expression of AtDFR confers significant salt stress tolerance in Brassica napus L.

2017 ◽  
Vol 36 (8) ◽  
pp. 1215-1224 ◽  
Author(s):  
Jihye Kim ◽  
Won Je Lee ◽  
Tien Thanh Vu ◽  
Chan Young Jeong ◽  
Suk-Whan Hong ◽  
...  
Keyword(s):  
Salt Stress ◽  
Brassica Napus ◽  
Stress Tolerance ◽  
Ectopic Expression ◽  
Salt Stress Tolerance ◽  
Brassica Napus L ◽  
High Accumulation

scholarly journals β-Aminobutyric Acid Pretreatment Confers Salt Stress Tolerance in Brassica napus L. by Modulating Reactive Oxygen Species Metabolism and Methylglyoxal Detoxification

Plants ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 241 ◽  
Author(s):  
Jubayer Al Mahmud ◽  
Mirza Hasanuzzaman ◽  
M. Iqbal R. Khan ◽  
Kamrun Nahar ◽  
Masayuki Fujita
Keyword(s):  
Reactive Oxygen Species ◽  
Salt Stress ◽  
Brassica Napus ◽  
Stress Tolerance ◽  
Photosynthetic Pigments ◽  
Antioxidant Defense ◽  
Aminobutyric Acid ◽  
Oxygen Species ◽  
Salt Stress Tolerance ◽  
Brassica Napus L

Salinity is a serious environmental hazard which limits world agricultural production by adversely affecting plant physiology and biochemistry. Hence, increased tolerance against salt stress is very important. In this study, we explored the function of β-aminobutyric acid (BABA) in enhancing salt stress tolerance in rapeseed (Brassica napus L.). After pretreatment with BABA, seedlings were exposed to NaCl (100 and 150 mM) for 2 days. Salt stress increased Na content and decreased K content in shoot and root. It disrupted the antioxidant defense system by producing reactive oxygen species (ROS; H2O2 and O2•−), methylglyoxal (MG) content and causing oxidative stress. It also reduced the growth and photosynthetic pigments of seedlings but increased proline (Pro) content. However, BABA pretreatment in salt-stressed seedlings increased ascorbate (AsA) and glutathione (GSH) contents; GSH/GSSG ratio; and the activities of ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), glutathione reductase (GR), glutathione peroxidase (GPX), superoxide dismutase (SOD), catalase (CAT), glyoxalase I (Gly I), and glyoxalase II (Gly II) as well as the growth and photosynthetic pigments of plants. In addition, compared to salt stress alone, BABA increased Pro content, reduced the H2O2, MDA and MG contents, and decreased Na content in root and increased K content in shoot and root of rapeseed seedlings. Our findings suggest that BABA plays a double role in rapeseed seedlings by reducing Na uptake and enhancing stress tolerance through upregulating the antioxidant defense and glyoxalase systems.

scholarly journals β-aminobutyric Acid Pretreatment Confers Salt Stress Tolerance in Brassica napus L. by Modulating Reactive Oxygen Species Metabolism and Methylglyoxal Detoxification

2020 ◽  
Author(s):  
Jubayer Al Mahmud ◽  
Mirza Hasanuzzaman ◽  
M. Iqbal R. Khan ◽  
Kamrun Nahar ◽  
Masayuki Fujita
Keyword(s):  
Reactive Oxygen Species ◽  
Salt Stress ◽  
Brassica Napus ◽  
Stress Tolerance ◽  
Photosynthetic Pigments ◽  
Reactive Oxygen ◽  
Aminobutyric Acid ◽  
Oxygen Species ◽  
Salt Stress Tolerance ◽  
Brassica Napus L

Salinity is a serious environmental hazard which limits world agricultural production by adversely affects plant physiology and biochemistry. Hence increase tolerance against salt stress is very important. In this study, we explored the function of β-aminobutyric acid (BABA) in enhancing salt stress tolerance in rapeseed (Brassica napus L.). After pretreatment with BABA, seedlings were exposed to NaCl (100 mM and 150 mM) for 2 days. Salt stress increased Na content and decreased K content in shoot and root. It disrupted the antioxidant defense system by producing reactive oxygen species (ROS; H2O2 and O2•−), methylglyoxal (MG) content and causing oxidative stress. It also reduced the growth and photosynthetic pigments of seedlings but increased proline (Pro) content. However, BABA pretreatment in salt-stressed seedlings increased ascorbate (AsA) and glutathione (GSH) contents; GSH/GSSG ratio; and the activities of ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), glutathione reductase (GR), glutathione peroxidase (GPX), superoxide dismutase (SOD), catalase (CAT), glyoxalase I (Gly I), and glyoxalase II (Gly II) as well as growth and photosynthetic pigments of plants. In addition, compared to salt stress alone BABA increased Pro content, reduced the H2O2, MDA and MG contents and decreased Na content in root and increased K content in shoot and root of rapeseed seedlings.

scholarly journals High-throughput phenotyping-based QTL mapping reveals the genetic architecture of the salt stress tolerance of Brassica napus

2021 ◽  
Author(s):  
Guofang Zhang ◽  
Jinzhi Zhou ◽  
Yan Peng ◽  
Zengdong Tan ◽  
Yuting Zhang ◽  
...  
Keyword(s):  
Salt Stress ◽  
Brassica Napus ◽  
Qtl Mapping ◽  
Stress Tolerance ◽  
Candidate Genes ◽  
Natural Population ◽  
High Throughput ◽  
Stress Conditions ◽  
Salt Stress Tolerance ◽  
High Throughput Phenotyping

Salt stress is a major limiting factor that severely affects the survival and growth of crops. It is important to understand the salt tolerance ability of Brassica napus and explore the underlying related genetic resources. We used a high-throughput phenotyping platform to quantify 2,111 image-based traits (i-traits) of a natural population under 3 different salt stress conditions and an intervarietal substitution line (ISL) population under 9 different stress conditions to monitor and evaluate the salt stress tolerance of B. napus over time. We finally identified 928 high-quality i-traits associated with the salt stress tolerance of B. napus. Moreover, we mapped the salt stress-related loci in the natural population via a genome-wide association study (GWAS) and performed a linkage analysis associated with the ISL population, respectively. The results revealed 234 candidate genes associated with salt stress response, and two novel candidate genes, BnCKX5 and BnERF3, were experimentally verified to regulate the salt stress tolerance of B. napus. This study demonstrates the feasibility of using high-throughput phenotyping-based QTL mapping to accurately and comprehensively quantify i-traits associated with B. napus. The mapped loci could be used for genomics-assisted breeding to genetically improve the salt stress tolerance of B. napus.

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