PLANT HORMONES Meaning and
Definition
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Plant hormones, also known as phytohormones, are naturally occurring chemical substances that regulate numerous physiological processes in plants. These hormones are produced and synthesized within specific organs or tissues in order to coordinate growth, development, and responses to environmental stimuli. They act as chemical messengers, allowing plants to adapt and respond to changing conditions by modulating gene expression and cellular activities.
There are five major types of plant hormones: auxins, gibberellins, cytokinins, abscisic acid, and ethylene. Each hormone has distinct functions and controls various aspects of plant growth and development.
Auxins are involved in controlling cell elongation, root formation, and apical dominance, which determines the growth direction of the plant. Gibberellins promote stem elongation, fruit development, and seed germination. Cytokinins regulate cell division, leaf senescence, and promote lateral bud growth. Abscisic acid regulates plant responses to stress, controls seed dormancy, and helps plants conserve water. Ethylene plays a role in fruit ripening, senescence, and leaf and flower abscission.
These hormones can interact with each other, regulate each other's synthesis, and have synergistic or antagonistic effects on plants. They are often transported through the vascular system to target tissues, where they bind to specific receptors and trigger signal transduction pathways.
Understanding the roles and mechanisms of plant hormones is crucial in plant science research, agriculture, and horticulture as they provide insights into manipulating plant growth, increasing crop yield, and improving stress tolerance.
Common Misspellings for PLANT HORMONES
- olant hormones
- llant hormones
- -lant hormones
- 0lant hormones
- pkant hormones
- ppant hormones
- poant hormones
- plznt hormones
- plsnt hormones
- plwnt hormones
- plqnt hormones
- plabt hormones
- plamt hormones
- plajt hormones
- plaht hormones
- planr hormones
- planf hormones
- plang hormones
- plany hormones
- plan6 hormones
Etymology of PLANT HORMONES
The etymology of the word "Plant Hormones" can be traced back to the combination of two separate origins.
The word "plant" originates from the Middle English word "plaunte", which was derived from the Old English word "plante". This Old English word has Germanic origins, ultimately coming from the Latin word "planta", meaning "sprout" or "young shoot".
On the other hand, the word "hormones" is derived from the Greek word "hormon", which means "that which sets in motion" or "stimulating". This Greek word is the present participle of "hormao", which means "to set in motion" or "to spur on".
When combined, the term "plant hormones" refers to chemical substances that are produced naturally by plants to regulate various physiological processes and growth.
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