scholarly journals Giberellic Acid-Stimulated Transcript Proteins Evolved through Successive Conjugation of Novel Motifs and Their Subfunctionalization

2019 ◽  
Vol 180 (2) ◽  
pp. 998-1012 ◽  
Author(s):  
Ashutosh Kumar ◽  
Alka Singh ◽  
Pramod Kumar ◽  
Ananda K. Sarkar
Keyword(s):  
Giberellic Acid

scholarly journals Response of morphological and biochemical traits and transcriptomic of CDPKs and P5CS Genes to phytohormones and nutrients in two bread wheat germplasms under salinity conditions

2021 ◽  
Vol 26 (6) ◽  
pp. 3054-3061
Author(s):  
ELHADI HADIA ◽  
AMOR SLAMA ◽  
AZIZA ZOGHLAMI ◽  
LEILA ROMDHANE ◽  
AHMED HOUSSEIN ABODOMA ◽  
...  
Keyword(s):  
Salt Stress ◽  
Bread Wheat ◽  
Molecular Level ◽  
Wheat Varieties ◽  
Calcium Dependent ◽  
Genes Expression ◽  
Giberellic Acid ◽  
Dependent Protein ◽  
Biochemical Level ◽  
Calcium Dependent Protein Kinases

Several enzymes play an important role in the biosynthesis of osmolyte in plants. The main objective of this work is to study the effects of salt stress, kinetin+potassium and giberellic acid+potassium on calcium-dependent protein kinases (CDPKs) and delta-1-pyrroline-5- carboxylate synthase (P5CS) genes expression of two bread wheat varieties. The results shodwe that, salts stress reduced the plant growth of the two wheat germplasms. Moreover, the addition of kinetin+ potassium improved the performance of morphometric parameters while the addition of giberellic acid +potassium has less effect. On the biochemical level, results indicated that salt stress increased the proline contents compared with control plants. Extra increase in proline contents was recorded by kinetin+ potassium, while the treatment of giberellic acid +potassium showed almost similar results as in salt stress only. On the molecular level, salt stress, kinetin and giberellic acid significantly increased the two genes expression of CDPKs and P5CS with more effect in presence of kinetin+ potassium.

scholarly journals Enhanced germination performance of dormant seeds of Eragrostis tef in the presence of light

2019 ◽  
Vol 7 (3) ◽  
pp. 244-251
Author(s):  
Iskender Tiryaki ◽  
Sakir Anil Kaplan
Keyword(s):  
Seed Germination ◽  
Seed Dormancy ◽  
Plant Hormones ◽  
Indole Acetic Acid ◽  
Germination Percentage ◽  
Eragrostis Tef ◽  
Crop Establishment ◽  
Giberellic Acid ◽  
Related Plant ◽  
Time Required

Lack of germination or low germination due to seed dormancy prevents successful crop establishment in several important plants. To determine the presence of innate seed dormancy and effects of stress-related plant hormones on germination performance of Teff (Eragrostis tef) seeds, we primed seeds in 1% KNO3 for 24 hours in dark conditions at 21 ± 0.5 ºC along with varying concentrations of chemicals known to influence seed germination, including: acetyl salicylic acid (ASA); methyl jasmonate (JA-Me); giberellic acid (GA3); and indole acetic acid (IAA). Primed seeds were incubated either in constant light (210 µM/m2/s) or in darkness at 21 ± 0.5 ºC. The results indicated that primingsignificantly improved final germination percentage (FGP) in both light (92.5%) and dark (89.4%) conditions compared with untreated seeds. The inclusion of plant hormones in the priming media generally had limited effects, except for 10 mM ASA (94.5%) and 100 mM GA3 (92.5%). ASA generally provided faster seed germination than seeds primed in 1% KNO3 only, while the other plant hormones had no effect on the time required for 50% of FGP in the dark. Priming had no significant effect on time span of germination in either light or dark incubation conditions. The results demonstrate that E. tef has light-inducible seed germination and about half of freshly harvested seeds can be dormant, which can be eliminated to some extent by priming seeds in 1% KNO3.

scholarly journals 300 Effects of Plant Growth Regulators on Eggplant (Solanum melongena L.) Yield

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 443C-443
Author(s):  
J. Pablo Morales-Payan
Keyword(s):  
Plant Growth ◽  
Gibberellic Acid ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Fruit Set ◽  
Block Design ◽  
Control Treatment ◽  
Amine Hydrochloride ◽  
Yield Increase ◽  
Giberellic Acid

Field studies were conducted in the Dominican Republic to determine the effect of several plant growth regulators on the yield of `Jira' eggplant. Treatments consisted of aqueous solutions of folcysteine (25, 50, 75 ppm), giberellic acid 3 (10, 20, 30 ppm), kinetine (25, 50, 75 ppm), naphthalenacetic acid (NAA) (25, 50, 75 ppm), 2,3,4-dichloro-phenoxy-triethyl-amine hydrochloride (DCPTA) (25, 50, 75 ppm), triacontanol (5, 10, 15 ppm), ethanol (5, 10, 15%), and chlormequat (50, 100, 150 ppm) sprayed at early flowering, directed to the crop upper leaves and flowers. A control treatment (no plant growth regulators applied) was also included. A randomized complete-block design with four replications was utilized. Experimental units were two rows of 10 plants at a 1.0 × 0.4-m distancing. Eggplant fruit set and yield were determined after 10 harvests performed at 3-day intervals. Analysis of variance and mean comparison tests were performed on the resulting data. `Jira' eggplant fruit set and yield was significantly improved by folcysteine, giberellic acid 3, and NAA, but not by kinetine, DCPTA, ethanol, triacontanol, or chlormequat. Eggplant yield increased as folcysteine rate increased from 0 to 50 ppm, but no further yield increase was obtained when increasing the rate from 50 to 75 ppm. Similarly, eggplant yield significantly increased as gibberellic acid increased from 0 to 20 ppm, but not when rates increased from 20 to 30 ppm. With NAA, eggplant fruit set and yield significantly increased above that of control plants when 25 ppm was applied, with no significant yield increase at higher rates. Results indicate that the yield of `Jira' eggplants could be enhanced by the treatments with either folcysteine, NAA, or gibberellic acid hereby described.

Effects of dewinging, soaking, stratification, and growth regulators on germination of green ash seed

1982 ◽  
Vol 12 (4) ◽  
pp. 931-935 ◽  
Author(s):  
Richard W. Tinus
Keyword(s):  
Growth Regulators ◽  
Warm Water ◽  
Green Ash ◽  
Fresh Seed ◽  
Giberellic Acid

Dewinging stored seed of green ash (Fraxinuspennsylvanica Marsh.) increased speed of and total germination. Fresh seed germinated best with a 4-day warm-water soak followed by 30-day stratification at 3 °C. Best procedures for stored seed were a 4-day soak in 100 ppm giberellic acid or a 2-day soak in 1 – 10 ppm 6-benzyladenine, followed by 30-day stratification at 3 °C.

scholarly journals Influence of different environmental conditions and giberellic acid treatment on flowering time of divergent genotypes of cabbage (Brassica oleracea var. capitata L.) and their F1 hybrids

Genetika ◽  
2020 ◽  
Vol 52 (3) ◽  
pp. 1263-1279
Author(s):  
Sladjan Adzic ◽  
Zdenka Girek ◽  
Suzana Pavlovic ◽  
Bogoljub Zecevic ◽  
Jelena Damnjanovic ◽  
...  
Keyword(s):  
Flowering Time ◽  
Geographical Origin ◽  
F1 Hybrids ◽  
Winter Period ◽  
Relative Expression ◽  
Quantitative Expression ◽  
Ammi Analysis ◽  
Different Seasons ◽  
Giberellic Acid ◽  
Flowering Process

In the process of cabbage breeding and seed production, one of the most important characteristics is the time of flowering. In order to investigate the influence of genotype, season and term of sowing on the flowering process, as well as the genetic control of this trait, an experiment was conducted with three genotypes of cabbage N, B and Scc of different geographical origin and different vegetation length, as well as three new F1 hybrids N x Scc , B x Scc and B x N obtained by hybridization between genotypes. The experiment was conducted during three temperature different seasons S1, S2 and S3 (average cold, cold and warm seasons), in three different sowing terms: August 15 (I), September 1 (II) and September 15 (III). During the winter period favorable for vernalization, two treatments with 300 ppm GA3 were performed. A statistically significant influence of all examined factors: genotype, year, sowing term and gibberellin GA3 treatment, on flowering time was determined. AMMI analysis determined the degree of adaptability of genotypes depending on the growing season, sowing terms and GA3 treatment for the trait time of flowering. The highest stability based on ASV values for flowering time was shown by hybrid BxN and its parental component genotypes B and N, while the hybrid Scc x B proved to be the most unstable in terms of flowering time. The pattern of relative expression of the most important flower repressor BoFLC2 gene showed a certain correlation with the flowering time of genotypes. The lowest quantitative expression of this gene was found in genotype B and it had the earliest flowering in all seasons, while genotype N had the highest relative expression of the BoFLC2 locus and the latest flowering.

Facts and hypotheses on the origin of S mutations and on the function of the S gene in Nicotiana alata and Lycopersicum peruvianum

1975 ◽  
Vol 188 (1092) ◽  
pp. 345-360 ◽  
Keyword(s):  
Electron Microscopy ◽  
Protein Synthesis ◽  
Tandem Repeats ◽  
Pollen Tubes ◽  
Nicotiana Alata ◽  
S Locus ◽  
Interspecific Incompatibility ◽  
S Gene ◽  
Giberellic Acid ◽  
Incompatibility Reactions

Fragments in certain pollen-part mutants are suspected to originate from duplications of satellited regions. Linkage tests demonstrate that, if this interpretation is correct, either the specificity segment of the S locus is not on the fragment or two unliked specificity segments operate respectively in pollen and style. As electron microscopy and the effects of giberellic acid on selfing suggest that one manifestation of incompatibility reactions is a cessation of protein synthesis in pollen tubes, it is possible that the fragment does not carry an S locus but ribosomal cistrons necessary for the maintenance of activity. Ancestry tests are under way for testing the hypothesis that different specificity segments are organized as tandem repeats and can be switched on and off in inbred backgrounds. Electron microscopy analyses of self-incompatible hybrids indicate that a single gametophytic factor governs interspecific incompatibility in hybrid pollen and is allelic or linked to the S locus.

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