2020
DOI: 10.3390/agronomy10081186
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Stomata and Xylem Vessels Traits Improved by Melatonin Application Contribute to Enhancing Salt Tolerance and Fatty Acid Composition of Brassica napus L. Plants

Abstract: Salinity stress is a limiting factor for the growth and yield quality of rapeseed. The potentiality of melatonin (MT; 0, 25, 50, and 100 µM) application as a seed priming agent in mediating K+/Na+ homeostasis and preventing the salinity stress mediated oxidative damage and photosynthetic inhibition was studied in two rapeseed cultivars. We found that 50 µM MT treatment imparted a very prominent impact on growth, metabolism of antioxidants, photosynthesis, osmolytes, secondary metabolites, yield, and fatty acid… Show more

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Cited by 78 publications
(46 citation statements)
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“…Its husk (isabgol) contains important compounds for the activation of primary and secondary metabolism [83,84]. ROS production under drought induces oxidative stress in plants, causes reduction in the plant biomass and yield [67,75]. In this study, maize seeds (primed with P. ovata leaf extract) antioxidant activity increased, resulting in enhancement in the plant growth and biomass by scavenging the ROS under drought conditions [83].…”
Section: Discussionmentioning
confidence: 70%
See 1 more Smart Citation
“…Its husk (isabgol) contains important compounds for the activation of primary and secondary metabolism [83,84]. ROS production under drought induces oxidative stress in plants, causes reduction in the plant biomass and yield [67,75]. In this study, maize seeds (primed with P. ovata leaf extract) antioxidant activity increased, resulting in enhancement in the plant growth and biomass by scavenging the ROS under drought conditions [83].…”
Section: Discussionmentioning
confidence: 70%
“…The increase in the activities of antioxidant enzymes was concomitant with the generation of extra ROS [62,72,73]. It was also reported that increases in the activities of various antioxidant enzymes under environmental stress conditions are due to the reduction in glutathione con-tents [74,75]. In the current experiment, oxidative stress biomarkers were enhanced in maize seedlings cultivated in a minimal water containing environment (Figure 5), while the water deficient environment also increased the antioxidants activity in drought, with respect to the control seedlings (Figure 6).…”
Section: Discussionmentioning
confidence: 95%
“…Studies have found that melatonin regulates diverse biological responses of plants and improves plant tolerance to adversity. Melatonin protects the photosynthetic capacity [ 37 ], reduces the osmotic stress and ion toxicity [ 38 41 ], improves the characteristics of stomata [ 38 ], protects chloroplast structure, grana lamellae, more complete mesophyll cells and more chloroplasts [ 42 , 43 ], and improves the anatomical structure of plants [ 44 , 45 ] under stress. Studies on maize ( Zea mays ) [ 46 ], rapeseed [ 47 ], soybean [ 48 ] and tea [ 49 ] have shown that MT alleviates the damage to plants caused by stress.…”
Section: Introductionmentioning
confidence: 99%
“…Plants are typically exposed to a broad myriad of biotic and abiotic stresses, including feeding from wild animals and insects, weed infestation, hail, mechanical injury, diseases, low soil fertility, drought, salinity and others that can diminish the plant photosynthetic area, and thus, the attained total plant biomass or grain yield (Adeyemi et al, 2020; Adnan et al, 2020; Battaglia et al, 2018; Battaglia, Lee, Thomason, Fike, et al, 2019; Battaglia, Lee, Thomason, & Van Mullekom, 2019; Diatta, Fike, et al, 2020; Diatta, Thomason, et al, 2020; Farsad et al, 2019; Thomason & Battaglia, 2020) In the case of plants grown in a hot, arid or semi‐arid climate two of the main yield and biomass‐limiting stresses are salinity and drought (Saleem, Ali, Hussain, et al, 2020; Saleem, Ali, Rehman, Hasanuzzaman, et al, 2020; Zamin et al, 2019). In this context, the use of native and perennial C4 plant species, that can remain highly productive in environments with saline soils and recurrent drought periods, is an important strategy to cope against these predominant abiotic stresses in arid and semi‐arid climates (Battaglia, Fike, et al,2019; Khan, Zhang, Luo, Liu, Rizwan, et al, 2019b; Kumar, Lai, Battaglia, et al, 2019; Kumar, Lai, Kumar, et al, 2019; Mohamed et al, 2020). Recent research has shown that native plant species may exhibit stronger tolerance or better and faster mechanisms to adjust or withstand abiotic stress conditions such as drought and salinity stress compared to their cultivated relatives (Saleem, Ali, et al, 2019; Saleem, Rehman, et al,2020; Yaseen et al, 2020).…”
Section: Introductionmentioning
confidence: 99%