Nitric oxide alleviates salt stress in seed germination and early seedling growth of pakchoi (Brassica chinensis L.) by enhancing physiological and biochemical parameters

2020 ◽  
Vol 187 ◽  
pp. 109785 ◽  
Author(s):  
Yanfang Ren ◽  
Wei Wang ◽  
Junyu He ◽  
Luyun Zhang ◽  
Yuanjuan Wei ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Salt Stress ◽  
Seed Germination ◽  
Seedling Growth ◽  
Biochemical Parameters ◽  
Brassica Chinensis ◽  
Early Seedling Growth ◽  
Early Seedling ◽  
Physiological And Biochemical

scholarly journals Morphological, physiological, and biochemical responses to NaCl-induced salt stress in mungbean (Vigna radiata L.) varieties

2021 ◽  
Vol 13 (2) ◽  
pp. 10936
Author(s):  
Ganesh D. MANKAR ◽  
Uttam R. WAYASE ◽  
Deepak B. SHELKE ◽  
Tukaram D. NIKAM ◽  
Rajkumar B. BARMUKH
Keyword(s):  
Principal Component Analysis ◽  
Salt Stress ◽  
Seed Germination ◽  
Seedling Growth ◽  
Principal Component ◽  
Salt Tolerant ◽  
Early Seedling Growth ◽  
Early Seedling ◽  
Growth Attributes ◽  
Physiological And Biochemical

Seventeen mungbean varieties [Vigna radiata (L.) R. Wilczek] were subjected to 100-400 mM salinity stress at the germination stage, and the indices of seed germination and early seedling growth were analysed. With the increasing salinity, seed germination and seedling growth attributes were affected in all varieties. Principal component analysis and hierarchical cluster analysis of varietal responses on the germination and seeding growth attributes at 400 mM NaCl separated seventeen varieties into four distinct clusters. Principal component analysis at lower salt stress levels indicated that the attributes of germination and early seedling growth are reliable to identify salt-tolerant mungbean varieties. In contrast, only germination attributes are reliable at higher salinity levels. Two salt-susceptible and salt-tolerant varieties were further assessed for NaCl-induced physiological and biochemical changes. Levels of proteins, secondary metabolites, osmolyte, and antioxidants were increased at lower salt concentrations but reduced at higher salt concentrations. Photosynthetic pigments decreased and membrane damage increased under salinity. Varieties that showed tolerance to salt stress can be used in salinity-affected agriculture fields after validating their salt tolerance in field experiments.

scholarly journals The CBL-Interacting Protein Kinase NtCIPK23 Positively Regulates Seed Germination and Early Seedling Development in Tobacco (Nicotiana tabacum L.)

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 323
Author(s):  
Sujuan Shi ◽  
Lulu An ◽  
Jingjing Mao ◽  
Oluwaseun Olayemi Aluko ◽  
Zia Ullah ◽  
...  
Keyword(s):  
Protein Kinase ◽  
Seed Germination ◽  
Seedling Growth ◽  
Hypocotyl Elongation ◽  
Interacting Protein ◽  
Knock Out ◽  
Early Seedling Growth ◽  
Tobacco Seedlings ◽  
Early Seedling ◽  
Cotyledon Expansion

CBL-interacting protein kinase (CIPK) family is a unique group of serine/threonine protein kinase family identified in plants. Among this family, AtCIPK23 and its homologs in some plants are taken as a notable group for their importance in ions transport and stress responses. However, there are limited reports on their roles in seedling growth and development, especially in Solanaceae plants. In this study, NtCIPK23, a homolog of AtCIPK23 was cloned from Nicotiana tabacum. Expression analysis showed that NtCIPK23 is mainly expressed in the radicle, hypocotyl, and cotyledons of young tobacco seedlings. The transcriptional level of NtCIPK23 changes rapidly and spatiotemporally during seed germination and early seedling growth. To study the biological function of NtCIPK23 at these stages, the overexpressing and CRISPR/Cas9-mediated knock-out (ntcipk23) tobacco lines were generated. Phenotype analysis indicated that knock-out of NtCIPK23 significantly delays seed germination and the appearance of green cotyledon of young tobacco seedling. Overexpression of NtCIPK23 promotes cotyledon expansion and hypocotyl elongation of young tobacco seedlings. The expression of NtCIPK23 in hypocotyl is strongly upregulated by darkness and inhibited under light, suggesting that a regulatory mechanism of light might underlie. Consistently, a more obvious difference in hypocotyl length among different tobacco materials was observed in the dark, compared to that under the light, indicating that the upregulation of NtCIPK23 contributes greatly to the hypocotyl elongation. Taken together, NtCIPK23 not only enhances tobacco seed germination, but also accelerate early seedling growth by promoting cotyledon greening rate, cotyledon expansion and hypocotyl elongation of young tobacco seedlings.

scholarly journals Assessment on the Effects of Potting Media on Seed Germination and Early Seedling Growth of Pterocarpus erinaceus Poir

2021 ◽  
Vol 25 (6) ◽  
pp. 969-975
Author(s):  
M.K. Peter ◽  
SIN Agera ◽  
J.I. Amonum
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Growth Parameters ◽  
Cow Dung ◽  
Early Seedling Growth ◽  
Top Soil ◽  
Early Seedling ◽  
Potting Media ◽  
Number Of Leaves ◽  
Poultry Droppings

This study investigated the effects of potting media on seed germination and early seedling growth of Pterocarpus erinaceus Poir at the Forestry Nursery in Jos, Nigeria. Using Completely Randomized Design (CRD) with three replicates, laboratory-tested soil samples, top soil, sharp sand, sharp sand + top soil, sharp sand + top soil + cow dung and sharp sand + top soil + poultry droppings were used in various combinations to assess the growth parameters of P. erinaceus (germination percentage, emergence, plant height, number of leaves, length of leaves and stem diameter) for 12 weeks. Descriptive and inferential statistics were employed to analyze collected data. Result indicated that sharp sand + top soil + poultry droppings had the highest nitrogen concentration (2.19%), sharp sand + top soil + cow dung (2.07%), sharp sand + top soil (1.50%), top soil (0.72%) and Sharp sand (0.38%). Potting media with poultry droppings recorded an overall higher percentage germination of 42.9% by the end of the germination period. Analysis of variance (ANOVA) of collected data on combined soil aggregate on growth parameters indicated a significant (p<0.05) difference in plant height, number of leaves, leaf length and stem diameter. Potting with poultry dropping gave the best potting media growth results when compared to other treatments that enhanced seed germination and seedling growth of P. erinaceus. This superior observation of the poultry droppings incorporated potting mixtures over the cow dung provides an outstanding potentials to enhance P. erinaceus plantation establishment. Consequently, recommended for raising seedlings in the nursery as well as ensuring sustainable management.

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