scholarly journals Seed soaking with melatonin promotes seed germination under chromium stress via enhancing reserve mobilization and antioxidant metabolism in wheat

2021 ◽  
Vol 220 ◽  
pp. 112241
Author(s):  
Kangqi Lei ◽  
Shuzhen Sun ◽  
Kaitai Zhong ◽  
Shiyu Li ◽  
Hang Hu ◽  
...  
Keyword(s):  
Seed Germination ◽  
Antioxidant Metabolism ◽  
Reserve Mobilization ◽  
Seed Soaking ◽  
Chromium Stress

Photosynthesis and antioxidant metabolism modulate the low-temperature resistance of seed germination in maize

2021 ◽  
Author(s):  
Aiju Meng ◽  
Daxing Wen ◽  
Chunqing Zhang
Keyword(s):  
Seed Germination ◽  
Low Temperature ◽  
Temperature Stress ◽  
Seedling Growth ◽  
Low Temperature Stress ◽  
Maize Seed ◽  
Down Regulation ◽  
Antioxidant Metabolism ◽  
Temperature Resistance ◽  
Low Temperature Resistance

Spring maize is usually subjected to low-temperature stress during seed germination, which retards seedling growth even if under a suitable temperature. However, the mechanism underlying maize seed germination under low-temperature stress modulating seedling growth after being transferred to normal temperature is still ambiguous. In this study, we used two maize inbred lines with different low-temperature resistance (SM and RM) to investigate the mechanism. The results showed that the SM line had higher lipid peroxidation and lower total antioxidant capacity and germination percentage than the RM line under low-temperature stress, which indicated that the SM line was more vulnerable to low-temperature stress. Further transcriptome analysis revealed that seed germination under low-temperature stress caused down-regulation of photosynthesis related gene ontology (GO) terms in two lines. Moreover, the SM line displayed down-regulation of ribosome and superoxide dismutase (SOD) related genes, whereas genes involved in SOD and vitamin B6 were up-regulated in the RM line. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis revealed that photosynthesis and antioxidant metabolism related pathways played important roles in seed germination in response to low-temperature stress, and the photosynthetic system displayed a higher damage degree in the SM line. Both qRT-PCR and physiological characteristics experiments showed similar results with transcriptome data. Taken together, we propose a model for maize seed germination in response to low-temperature stress.

scholarly journals Enzyme activity and reserve mobilization during Macaw palm ( Acrocomia aculeata ) seed germination

2016 ◽  
Vol 30 (3) ◽  
pp. 438-444 ◽  
Author(s):  
Elisa Monteze Bicalho ◽  
Sérgio Yoshimitsu Motoike ◽  
Eduardo Euclydes de Lima e Borges ◽  
Glauciana da Mata Ataíde ◽  
Valéria Monteze Guimarães
Keyword(s):  
Enzyme Activity ◽  
Seed Germination ◽  
Reserve Mobilization ◽  
Macaw Palm ◽  
Acrocomia Aculeata

ABA-dependent sucrose regulation of antioxidant metabolism in wheat cultivars varying in ABA-sensitivity

Biologia ◽  
2015 ◽  
Vol 70 (2) ◽  
Author(s):  
Sandeep Kaur ◽  
Anil Kumar Gupta ◽  
Vikramjit Kaur Zhawar
Keyword(s):  
Antioxidant Enzymes ◽  
Abscisic Acid ◽  
Seed Germination ◽  
Culture Medium ◽  
Sodium Tungstate ◽  
Wheat Cultivars ◽  
Antioxidant Metabolism ◽  
Aba Sensitivity ◽  
Aba Biosynthesis

AbstractEffect of sucrose and its abscisic acid (ABA) dependence was studied for seed germination, growth and antioxidant related parameters in two wheat cultivars PBW343 (ABA-lesser sensitive) and C306 (ABA-higher sensitive) by using sucrose (Suc) with or without sodium tungstate (inhibitor for ABA biosynthesis) in culture medium. Exogenous Suc (at 1.5% and 3%) inhibited germination in both cultivars where ABA-dependency for such inhibitions was seen only under 3% sucrose in PBW343 and 1.5% sucrose in C306. Exogenous Suc at 1.5% stimulated growth, which was ABA-dependent in both cultivars. Exogenous Suc at 3% inhibited growth in both cultivars but such inhibitions were ABA-dependent only in PBW343. Suc supply (3%) decreased antioxidant enzymes and H

scholarly journals Effect Of Pre-Sowing Seed Treatments With Silicon Nanoparticles On Germinability Of Sunflower (Helianthus Annuus)

2015 ◽  
Vol 21 (1) ◽  
pp. 13-21 ◽  
Author(s):  
Mohsen Janmohammadi ◽  
Naser Sabaghnia
Keyword(s):  
Seed Germination ◽  
Plant Growth ◽  
Crop Production ◽  
Silicon Nanoparticles ◽  
Seedling Emergence ◽  
Seedling Vigour ◽  
Seed Soaking ◽  
Positive Effects ◽  
Nano Silicon ◽  
Sowing Seed

AbstractSilicon is one of the most widespread macro elements that have beneficial effects on plant growth. Although its positive effects on plant growth and development have been widely considered, little information is available about possibility of nano-silicon utilization in seed invigoration treatments. Enhanced seed germination may lead to improved stand establishment and it can play important role in successful crop production. Partial hydration of the seeds followed by dehydration in a controlled environment often results in rapid seed germination and more uniform seedling emergence compared to untreated seeds. In the present study, the effect of seed soaking in different concentration nano-silicon solutions (0, 0.2, 0.4, 0.6, 0.8, 1 and 1.2 mM for 8 h) on germination characteristics of sunflower was investigated. Seed soaking in low concentration nano-silicon solutions (0.2 and 0.4 mM) significantly reduced days to 50% germination and mean germination time and improved root length, mean daily germination, seedling vigour index and final germination percentage. These results suggest that the incorporation of nano-silicon in priming solution, in an appropriate concentration, remarkably enhances germination performance and causes an effective invigoration of the seedling. These results underline the importance of pre-sowing seed soaking in diluted nano-silicon solutions for improving the germinability of sunflower.

scholarly journals Behavior of some Hungarian wheat varieties to seed soaking in gibberellic acid under salt stress

2017 ◽  
pp. 7-17 ◽  
Author(s):  
W. A. E. Abido ◽  
László Zsombik
Keyword(s):  
Seed Germination ◽  
Chemical Analysis ◽  
Gibberellic Acid ◽  
Salinity Stress ◽  
Block Design ◽  
Wheat Varieties ◽  
Seed Soaking ◽  
Germination Characteristics ◽  
Randomized Complete Block Design ◽  
Four Levels

Various abiotic stresses including high salinity strongly affect seed germination. Three Hungarian wheat landraces Gamási, Fóti and Kartali have been tested for seed germination, seedling growth and chemicals parameters when seeds were soaked in gibberellic acid (GA3) at the concentrations of 0, 75 and 150 ppm and at four levels of salinity stress 0, 5, 10 and 15 dSm-1. A laboratory experiment took place at Research Institute of Nyíregyháza. Factorial Experiment based on Randomized Complete Block Design (RCBD) in four replications has been conducted. Seed soaking in GA3 before sowing significantly affected germination characteristics, seedling properties and the results of chemical analysis. The highest germination as well as K+ content of seeds were observed at seed soaking into 150 ppm GA3. However, Na+ and proline contents in seedling were decreased. The behavior of the tested Hungarian wheat varieties was genotype-dependent. Increasing salinity stress up to 15 dSm-1 significantly affected germination characteristics, seedlings parameters and chemical analysis. Fóti variety turned out to be the best at 150 ppm GA3 compared to the other two varieties. Moreover, it had the lowest Na+ and proline contents and highest K+ content.

scholarly journals Molecular aspects during seed germination of Erythrina velutina Willd. under different temperatures (Part 1): reserve mobilization

2020 ◽  
Vol 42 ◽  
Author(s):  
Francival Cardoso Felix ◽  
Josenilda Aprígio Dantas de Medeiros ◽  
Cibele dos Santos Ferrari ◽  
Mauro Vasconcelos Pacheco ◽  
Salvador Barros Torres
Keyword(s):  
Thermal Stress ◽  
Seed Germination ◽  
Seedling Establishment ◽  
Incubation Temperature ◽  
Northeastern Brazil ◽  
Reserve Mobilization ◽  
Social Ecological ◽  
Different Temperatures ◽  
Molecular Aspects ◽  
Germination Vigor

ABSTRACT: Erythrina velutina Willd. (Fabaceae) is a tree species that bears social, ecological, and economic importance for northeastern Brazil, a region with frequent temperature variations. The objective of this work was to evaluate the mobilization of reserves during seed germination and seedling establishment of E. velutina at different temperatures, and how these mechanisms are affected in a thermal-stress situation. The seeds germinated at 5, 15, 25, 35, and 45 °C, and the physiological and biochemical aspects of reserve mobilization (starch, lipids, and total proteins) were assessed during seedling establishment. Germination, vigor, and the mobilization of reserves from the cotyledons to the embryonic axis are affected according to the incubation temperature. The temperature of 25 °C favors the mobilization of reserves during seed germination and seedling establishment in E. velutina. In a situation of thermal stress, high temperatures affect the establishment of the seedlings, whereas low temperatures compromise the mobilization of reserves.

Effect of Seed Soaking with Exogenous Proline on Seed Germination of Rice Under Salt Stress

2014 ◽  
Vol 21 (3) ◽  
pp. 1-6 ◽  
Author(s):  
Liu Hua-long ◽  
Sha Han-jing ◽  
Wang Jing-guo ◽  
Liu Yang ◽  
Zou De-tang ◽  
...  
Keyword(s):  
Salt Stress ◽  
Seed Germination ◽  
Seed Soaking ◽  
Exogenous Proline
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