Ads
related to: plant growth regulation
Search results
Results from the WOW.Com Content Network
Plant hormones control all aspects of plant growth and development, including embryogenesis, [1] the regulation of organ size, pathogen defense, [2] [3] stress tolerance [4] [5] and reproductive development. [6] Unlike in animals (in which hormone production is restricted to specialized glands) each plant cell is capable of producing hormones.
On top of the gradual growth of the plant, the image reveals the true meaning of phototropism and cell elongation, meaning the light energy from the sun is causing the growing plant to bend towards the light aka elongate. Plant growth and development are mediated by specific plant hormones and plant growth regulators (PGRs) (Ross et al. 1983). [10]
Biostimulants also termed as plant conditioners or bioeffectors are substances, cultures of micro-organism, and mixtures of materials used to promote the growth of crop plants and can include natural or artificial plant growth regulators and biofertilizers. They do not include pesticides or fertilizers.
Growth of cells contributes to the plant's size, unevenly localized growth produces bending, turning and directionalization of organs- for example, stems turning toward light sources (phototropism), roots growing in response to gravity (gravitropism), and other tropisms originated because cells on one side grow faster than the cells on the ...
The plant hormone ethylene is a combatant for salinity in most plants. Ethylene is known for regulating plant growth and development and adapted to stress conditions through a complex signal transduction pathway. Central membrane proteins in plants, such as ETO2, ERS1 and EIN2, are used for ethylene signaling in many plant growth processes.
[5] [8] JA also strengthens plant defenses, linking mechanical perturbations to resistance against herbivory and pathogens, as shown by enhanced pest resistance in wind-stimulated plants with elevated JA levels. [8] [10] Ethylene and auxin complement JA by influencing cell elongation and asymmetric growth, both critical for thigmomorphogenesis.
The epigenetics of plant growth and development refers to the heritable changes in gene expression that occur without alterations to the DNA sequence, influencing processes in plants such as seed germination, flowering, and stress responses through mechanisms like DNA methylation, histone modification, and chromatin remodeling.
This has also been observed in tobacco plants. [38] Auxin increases GA 3-oxidation and decreases GA 2-oxidation in barley. [39] Auxin also regulates GA biosynthesis during fruit development in peas. [40] These discoveries in different plant species suggest the auxin regulation of GA metabolism may be a universal mechanism.
Ads
related to: plant growth regulation