Abscisic acid is a hormone that plants produce. Chemically speaking, it is a terpenoid, which means that it is a carotenoid derivative. It causes seeds to become more dormant in plants.
One of the hormones produced by plants is called abscisic acid (ABA), which is also referred to as abscisin II and dormin. It plays a role in a number of the developmental stages of the plant, including bud dormancy. Carotenoids are the starting point for the production of abscisic acid.
What are carotenoid pigments?
Carotenoid pigments are mostly C40 lipophilic isoprenoids, and they are produced in all photosynthetic organisms (bacteria, algae, and plants), as well as in certain non-photosynthetic bacteria and fungus. Carotenoid pigments give plants their characteristic red, orange, and yellow colors.
What is the importance of carotenoids in plants?
Because at least two of the most important phytohormones, strigolactones and abscisic acid, are produced from carotenoid precursors, it is clear that carotenoids play an essential role in the growth and development of plants. The age-related macular degeneration that can occur in humans can be halted by taking certain carotenoids, which are precursors to vitamin A.
How are carotenes converted into xanthophylls?
IPP and DMAPP go through a series of events, which ultimately lead to the formation of geranylgeranyl diphosphate, the primary carotenoid precursor (GGPP). Within the carotenoid biosynthetic pathway, there are a number of distinct processes that must be completed before GGPP may be transformed into either carotenes or xanthophylls.
What are the most abundant carotenoids in chloroplasts?
Typical carotenoids found in chloroplasts of terrestrial plants include lutein, beta-carotene, violaxanthin, and neoxanthin. Neoxanthin is also the most abundant of these pigments (Al-Babili and Beyer 2005; Ruiz-Sola and Rodriguez-Concepcion 2012 ).
Which plant hormone is derived from carotenoids?
Strigolactones, often known as SLs, are plant hormones and signaling molecules that are produced from carotenoids.When secreted into the soil, SLs signal the existence of a host to symbiotic fungi and plants that parasitize the roots of other plants.They are responsible for the regulation of numerous developmental processes in planta, which allow the plant architecture to adapt to the availability of nutrients.
Which of the following is a derivative of carotenoids?
Hence, derivative of carotenoids is abscissic acid. So, the right answer is ‘Abscissic acid’.
Which hormone is derived from pigment in plants?
Which of the following is involved in the manufacture of a plant hormone called IAA, and where does IAA get its start? Identify the hormone that is produced by plants and is derived from adenine.
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Which of the following phytochrome is derivative of carotenoids?
Abscisic acid is the solution (ABA).
Is Abscisic acid a carotenoid?
Abscisic acid is a plant hormone that is necessary and generated from the carotenoid abscisic acid. It has several roles in plant growth and is responsible for coordinating the plant’s response to various stress stimuli.
What is Abscisic acid hormone?
Abscisic acid, often known as ABA, is an important hormone that plays a role in the tuning of responses to a number of different abiotic stressors.It also has significant effects on the plant’s defensive mechanisms against a number of different pathogens.When it comes to plant defense against bacteria and fungi, ABA plays a varied function.Depending on the time it takes to exert its effect, it can either induce or suppress defensive responses.
What is the derivative of cytokinin?
Cytokinins that are produced by nature are adenine derivatives that have different substitutions linked to the N6 position of the adenine ring (Figure 1). Isoprenoid side chains are present in the most frequent family of cytokinins, which includes trans-zeatin, the cytokinin found in Arabidopsis in the highest concentration.
Which of the following plant growth factor is a derivative of adenine?
Adenine is the parent compound of cytokinin. Cytokinin will be of assistance to the process of cell division. Chemically speaking, gibberellin is a kind of terpene. Gibberellin can assist in the elongation of stems, the germination of seeds, and the overturning of hereditary dwarfism.
Which of the following plant growth regulator is derivative of accessory photosynthetic pigment?
Therefore, the answer that you are looking for is ″abscisic acid.″
What is Xanthophyll pigment?
The carotenoid group has a number of significant subgroups, one of which is called xanthophylls, which are yellow pigments. The definition of the word xanthophylls comes from the Greek words xanthos, which means yellow, and phyllon, which means leaf.
How do plants make carotenoids?
Carotenoids may be discovered in the membranes of plastids, which are organelles located inside of plant cells and are surrounded by distinctive double membranes. The chloroplast is the most significant type of plastid since it is responsible for photosynthesis, the production of carotenoids, and the storage of carotenoids.
What is auxin in plants?
Auxin refers to any member of a group of hormones produced by plants that are responsible for regulating growth, in particular through encouraging the extension of cells in stems.
Which of the following plant growth regulator is a terpene derivative?
Therefore, the answer that you should select is ″GA3.″
Is Zeatin a cytokinin?
A member of the cytokinin family, zeatin is a hormone that stimulates plant growth. It is made up of a purine ring structure with a side chain that includes hydroxyl, amino, and olefin groups in its constituent parts. Because it was found in the genus Zea, which is related to corn, it was given that name. Root systems of plants are the sites of production for zeatin and other cytokinins.