Forest seed treatment with brassinosteroids to increase their germination under stress conditions

Procházka, P.; Štranc, P.; Kupka, I.; Štranc, J.; Pazderů, Kateřina

doi:10.17221/2/2015-jfs

Cited by 9 publications

(10 citation statements)

References 9 publications

(9 reference statements)

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“…Cytokinins interacting with ethylene enhance cell division and alleviate abiotic stresses like salinity during germination (Chiwocha et al, 2005;Subbiah and Reddy, 2010;Peleg and Blumwald, 2011;Miransari and Smith, 2014). BRs, in conjunction with GAs and ethylene, improve seed resistance to abiotic stress, enhance embryo growth out of the seed, and reduce the effects of ABA (Bajguz and Hayat, 2009;Miransari and Smith, 2014;Procházka et al, 2015) and salt stress (Vázquez et al, 2019) during germination. JAs are signalling molecules for plant defence against osmotic stress caused by salt (Kazan and Manners, 2012;Nguyen et al, 2019).…”

Section: Seed Germination Process and Roles Of Hormonesmentioning

confidence: 99%

Salinity tolerance in barley during germination—homologs and potential genes

Mwando

Angessa

Han

et al. 2020

J. Zhejiang Univ. Sci. B

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Salinity affects more than 6% of the world's total land area, causing massive losses in crop yield. Salinity inhibits plant growth and development through osmotic and ionic stresses; however, some plants exhibit adaptations through osmotic regulation, exclusion, and translocation of accumulated Na + or Cl −. Currently, there are no practical, economically viable methods for managing salinity, so the best practice is to grow crops with improved tolerance. Germination is the stage in a plant's life cycle most adversely affected by salinity. Barley, the fourth most important cereal crop in the world, has outstanding salinity tolerance, relative to other cereal crops. Here, we review the genetics of salinity tolerance in barley during germination by summarizing reported quantitative trait loci (QTLs) and functional genes. The homologs of candidate genes for salinity tolerance in Arabidopsis, soybean, maize, wheat, and rice have been blasted and mapped on the barley reference genome. The genetic diversity of three reported functional gene families for salt tolerance during barley germination, namely dehydration-responsive element-binding (DREB) protein, somatic embryogenesis receptor-like kinase and aquaporin genes, is discussed. While all three gene families show great diversity in most plant species, the DREB gene family is more diverse in barley than in wheat and rice. Further to this review, a convenient method for screening for salinity tolerance at germination is needed, and the mechanisms of action of the genes involved in salt tolerance need to be identified, validated, and transferred to commercial cultivars for field production in saline soil.

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Section: Seed Germination Process and Roles Of Hormonesmentioning

confidence: 99%

Salinity tolerance in barley during germination—homologs and potential genes

Mwando

Angessa

Han

et al. 2020

J. Zhejiang Univ. Sci. B

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“…BR increase the ability of embryo to grow out of the seed by enhanced rupturing of endosperm reported by Leubner-Metzger (2001). Highest 49.6% germinationby BR observed in Fraxinus as compared to control 20% found by Prochazka (2015). Jasmonic acid Regulate Photosynthesis, take part in root and shoot growth, Seed germination, Flowering etc.…”

Section: Alcoholmentioning

confidence: 87%

Seed Germination Enhancement through Breaking Seed Dormancy: A Review in Tropical and Temperate Tree Species

Kaur¹,

Singh²,

Monga³

2020

Int.J.Curr.Microbiol.App.Sci

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The most important factor for the success of plantation is readily availability of quality seeds. In favorable climatic conditions with optimum moisture and temperature most of the tree species germinate quickly and in unfavorable conditions some degree of seed dormancy occurs. There are various kinds of dormancy occur in trees species such as; exogenous dormancy due to hard seed coat, seed coat impermeable to water, presences of chemical; endogenous dormancy due to immaturity of embryo, oxidation and presence of inhibitors; and double dormancy which include both seed coat and embryo dormancy. In most of tropical tree seeds, physical dormancy occurred because of hard seed coat whereas temperate trees seeds mainly have physiological dormancy. There are various methods to deal with different kinds of dormancy i.e. through Scarification, Stratification, Chemical, Biological, and Irradiation methods.(I) Scarification which is done in hard seed coated species such as Acacia spp., Albizia lebbeck, Cassia spp., Santalum album, Terminalia arjuna etc. Mechanical scarification and concentrated H₂ SO₄ have been widely used to improve germination of several hard seed species, but the level of seed coat thickness among various species is the reason for different responses to all treatments. (II) Stratification is done to remove physiological and morphological dormancy. Most of the Conifers generally have physiological dormancy, stratification for 0-5˚C for 60-70 days is better to overcome this kind of dormancy. (III) Chemical methods include use of growth regulator and chemicals for dormancy breaking. Growth hormones such as gibberellins, IAA and Kinetin etc. are mostly associated with seed germination and seedling physiology. Among all growth regulators GA 3 is most commonly used for germination enhancement @ 100-200 ppm for 1-2 h in most of the species. KNO 3 is important chemical for germination enhancement in many species such as Acacia nilotica, Melia azedarach etc. (IV) Biological method by passing through digestive tracts of animals like seeds of Acacia senegal and (V) Irradiation method irradiate seeds with like x-rays, light rays, gamma rays etc. So, breaking seed dormancy is necessary for seed germination enhancement in nursery.

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“…Climatic fluctuations of the past decades have affected all crops not only in the Czech Republic. These abiotic stresses can be partly compensated by agrotechnical measures, irrigation or the use of biologically active substances (Nesvadba et al 2003, Rybka et al 2014.The results of many experiments (Pavlovic et al 2012, Nováková et al 2014, Procházka et al 2015b) clearly show that the use of biologically active substances in the cultivation, not only of hops but also of other crops, leads to increased production and yield stabilization. According to these authors, plants with biologically active substances can react to different stress conditions and weather fluctuations.One of the ways to increase the production potential of hop plants, and thus their production, is the application of biologically active substances during vegetation .…”

mentioning

confidence: 99%

“…The results of many experiments (Pavlovic et al 2012, Nováková et al 2014, Procházka et al 2015b) clearly show that the use of biologically active substances in the cultivation, not only of hops but also of other crops, leads to increased production and yield stabilization. According to these authors, plants with biologically active substances can react to different stress conditions and weather fluctuations.…”

mentioning

confidence: 99%

Use of biologically active substances in hops

Procházka¹,

Štranc²,

Pazderů³

et al. 2018

PLANT SOIL ENVIRON

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In four-year experiments, hop was treated with 7 biologically active substances in two terms during vegetation: Lignohumate max (a mixture of humic acids and fulvic acids), Lexin (a mixture of humic acids and fulvic acids enriched with auxins), Lexenzym (a mixture of humic acids and fulvic acids enriched with auxins, phytohormones and enzymes precursors), Ascophyllum nodosum seaweed extract, synthetic auxin, humic acids and fulvic acids alone. The chlorophyll content was monitored after the application both in the vine leaves and in the branch leaves. After harvesting of the hops from the individual treatments, the yield of dry hops was determined and the cones were analysed for the content of alpha bitter acids. The results show that the most effective hop treatment was the application of Lexin and Lexenzym. The Lexenzym treatment provided a yield of dry hops of 1.86 t/ha, i.e. 0.47 t/ha higher compared with untreated control. The Lexin treatment provided yield higher by 0.41 t/ha of dry hops compared with the untreated control, while the harvested cones contained the most alpha-bitter acids (4.57%).

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Forest seed treatment with brassinosteroids to increase their germination under stress conditions

Cited by 9 publications

References 9 publications

Salinity tolerance in barley during germination—homologs and potential genes

Salinity tolerance in barley during germination—homologs and potential genes

Seed Germination Enhancement through Breaking Seed Dormancy: A Review in Tropical and Temperate Tree Species

Use of biologically active substances in hops

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