Seed priming with gibberellic acid and melatonin in rapeseed: Consequences for improving yield and seed quality under drought and non-stress conditions

Khan, Mohammad Nauman; Khan, Zaid; Luo, Tao; Liu, Jiahuan; Rizwan, Muhammad; Zhang, Jing; Xu, Zhenghua; Wu, Honghong; Hu, Liyong

doi:10.1016/j.indcrop.2020.112850

Cited by 87 publications

(39 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the contrary, melatonin treatment increases gibberellic acid (GA) synthesis and GA content under abiotic stress conditions including drought stress (Khan et al, 2020;Zhan et al, 2019). Recently, the GA3 and MT-primed rapeseed plants Foliar spray (100 μM) positive regulation of 24-epibrassinolide Sharma et al (2020) have been shown to exhibit improved morphological traits, yield and yield components, and seed qualitative attributes compared to noprimed plants under the drought stress (Khan et al, 2020). Melatonin is not only in cross-talk with GAs via GA-signaling, but further regulates the auxin biosynthetic pathway (Wei et al, 2017).…”

Section: Melatonin-mediated Hormonal Cross-talk In Drought Stress Regulationmentioning

confidence: 99%

“…Recently, several reports showed that melatonin treatment has enhanced the enzymatic antioxidants CAT, APX, MDHAR, and DHAR activities in maize (Alharby & Fahad, 2020); CAT, POD, SOD, and APX activities in buckwheat (Hossain et al, 2020); GT, CAT, POD, SOD, and GR activities in Salvia sp. (Bidabadi et al, 2020); indole acetic acid and phenolic contents; TSS, CAT, POD, and SOD activities in flax plants (Sadak et al, 2020); proline content and antioxidant CAT, POD, SOD, and GR activities in rapeseed (Khan et al, 2020); root catalase activity in rapeseed (Dai et al, 2020); and acid and alkaline invertase activities in anthers of cotton (Hu et al, 2020). Melatonin‐mediated activation of proline stimulates drought adaptations through a stabilized cell membrane and reduced ROS accumulation (Wang et al, 2019).…”

Section: Melatonin‐mediated Biochemical Defense Against Drought Stressmentioning

confidence: 99%

See 1 more Smart Citation

Mechanistic insights on melatonin‐mediated drought stress mitigation in plants

Tiwari

Lal

Kumar

et al. 2021

Physiologia Plantarum

179

View full text Add to dashboard Cite

Drought stress imposes a serious threat to crop productivity and nutritional security.Drought adaptation mechanisms involve complex regulatory network comprising of various sensory and signaling molecules. In this context, melatonin has emerged as a potential signaling molecule playing a crucial role in imparting stress tolerance in plants. Melatonin pretreatment regulates various plant physiological processes such as osmoregulation, germination, photosynthesis, senescence, primary/secondary metabolism, and hormonal cross-talk under water deficit conditions. Melatoninmediated regulation of ascorbate-glutathione (AsA-GSH) cycle plays a crucial role to scavenge reactive oxygen species generated in the cells during drought. Here, in this review, the current knowledge on the role of melatonin to ameliorate adverse effects of drought by modulating morphological, physiological, and redox regulatory processes is discussed. The role of melatonin to improve water absorption capacity of roots by regulating aquaporin channels and hormonal cross-talk involved in drought stress mitigation are also discussed. Overall, melatonin is a versatile bio-molecule involved in growth promotion and yield enhancement under drought stress that makes it a suitable candidate for eco-friendly crop production to ensure food security.

show abstract

Section: Melatonin-mediated Hormonal Cross-talk In Drought Stress Regulationmentioning

confidence: 99%

Section: Melatonin‐mediated Biochemical Defense Against Drought Stressmentioning

confidence: 99%

Mechanistic insights on melatonin‐mediated drought stress mitigation in plants

Tiwari

Lal

Kumar

et al. 2021

Physiologia Plantarum

179

View full text Add to dashboard Cite

show abstract

“…Enzymatic systems are composed of a set of SOD (antioxidant enzymes including superoxide dismutase), POD (peroxidase), CAT (catalase), and APX (ascorbate peroxidase), etc. Non-enzymatic systems, for example, include small organic molecules such as glutathione [18], mannitol [19], and melatonin [20,21], and can effectively scavenge ROS in plant cells. However, the energy cost of the synthesis of such compounds and compatible solutes is high.…”

Section: Introductionmentioning

confidence: 99%

ROS Homeostasis and Plant Salt Tolerance: Plant Nanobiotechnology Updates

Liu

et al. 2021

Sustainability

Self Cite

View full text Add to dashboard Cite

Salinity is an issue impairing crop production across the globe. Under salinity stress, besides the osmotic stress and Na+ toxicity, ROS (reactive oxygen species) overaccumulation is a secondary stress which further impairs plant performance. Chloroplasts, mitochondria, the apoplast, and peroxisomes are the main ROS generation sites in salt-stressed plants. In this review, we summarize ROS generation, enzymatic and non-enzymatic antioxidant systems in salt-stressed plants, and the potential for plant biotechnology to maintain ROS homeostasis. Overall, this review summarizes the current understanding of ROS homeostasis of salt-stressed plants and highlights potential applications of plant nanobiotechnology to enhance plant tolerance to stresses.

show abstract

“…Rapeseed ( Brassica napus L.) is one of the important oilseed crops in the world [ 1 ]. In the past decade, the Brassica napus total harvested area, productivity, and annual grain yield increased by 17.6% (29.5–34.7 million ha), 50.3% (50.6–76.1 million tons), and 27.8% (1716–2194 kg ha −1 ) respectively, reflecting that the demand for Brassica napus is continuing to increase [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

“…Seed priming enhances antioxidant enzymes activities and reduces lipid peroxidation [ 10 ]. Besides priming for disease control [ 13 ] and nutrient supply [ 14 ], seeds can be also imbibed in a solution containing certain solutes such as salt [ 15 ], mannitol [ 16 ], and PEG [ 10 ] etc., for the activation of pre-germinative metabolism while not allowing the seed to the fully germination stage [ 1 ]. Among the priming techniques, seed nanopriming which uses nanomaterials to prime seeds, has been reported to be successfully applied for improving germination and stress tolerance of seedlings [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Nanoceria seed priming enhanced salt tolerance in rapeseed through modulating ROS homeostasis and α-amylase activities

Khan

et al. 2021

J Nanobiotechnol

Self Cite

View full text Add to dashboard Cite

Background Salinity is a big threat to agriculture by limiting crop production. Nanopriming (seed priming with nanomaterials) is an emerged approach to improve plant stress tolerance; however, our knowledge about the underlying mechanisms is limited. Results Herein, we used cerium oxide nanoparticles (nanoceria) to prime rapeseeds and investigated the possible mechanisms behind nanoceria improved rapeseed salt tolerance. We synthesized and characterized polyacrylic acid coated nanoceria (PNC, 8.5 ± 0.2 nm, −43.3 ± 6.3 mV) and monitored its distribution in different tissues of the seed during the imbibition period (1, 3, 8 h priming). Our results showed that compared with the no nanoparticle control, PNC nanopriming improved germination rate (12%) and biomass (41%) in rapeseeds (Brassica napus) under salt stress (200 mM NaCl). During the priming hours, PNC were located mostly in the seed coat, nevertheless the intensity of PNC in cotyledon and radicle was increased alongside with the increase of priming hours. During the priming hours, the amount of the absorbed water (52%, 14%, 12% increase at 1, 3, 8 h priming, respectively) and the activities of α-amylase were significantly higher (175%, 309%, 295% increase at 1, 3, 8 h priming, respectively) in PNC treatment than the control. PNC primed rapeseeds showed significantly lower content of MDA, H2O2, and •O2− in both shoot and root than the control under salt stress. Also, under salt stress, PNC nanopriming enabled significantly higher K+ retention (29%) and significantly lower Na+ accumulation (18.5%) and Na+/K+ ratio (37%) than the control. Conclusions Our results suggested that besides the more absorbed water and higher α-amylase activities, PNC nanopriming improves salt tolerance in rapeseeds through alleviating oxidative damage and maintaining Na+/K+ ratio. It adds more knowledge regarding the mechanisms underlying nanopriming improved plant salt tolerance. Graphical abstract

show abstract

Seed priming with gibberellic acid and melatonin in rapeseed: Consequences for improving yield and seed quality under drought and non-stress conditions

Cited by 87 publications

References 44 publications

Mechanistic insights on melatonin‐mediated drought stress mitigation in plants

Mechanistic insights on melatonin‐mediated drought stress mitigation in plants

ROS Homeostasis and Plant Salt Tolerance: Plant Nanobiotechnology Updates

Nanoceria seed priming enhanced salt tolerance in rapeseed through modulating ROS homeostasis and α-amylase activities

Contact Info

Product

Resources

About