Definitions for strigolactone
strigo·lac·tone

WiktionaryRate this definition:0.0 / 0 votes

1. strigolactonenoun

   Any of a family of terpenoid lactones that stimulate germination in parasitic plants of the genus Striga, and that inhibit shoot branching

WikipediaRate this definition:0.0 / 0 votes

1. Strigolactone

   Strigolactones are a group of chemical compounds produced by a plant's roots. Due to their mechanism of action, these molecules have been classified as plant hormones or phytohormones. So far, strigolactones have been identified to be responsible for three different physiological processes: First, they promote the germination of parasitic organisms that grow in the host plant's roots, such as Striga lutea and other plants of the genus Striga. Second, strigolactones are fundamental for the recognition of the plant by symbiotic fungi, especially arbuscular mycorrhizal fungi, because they establish a mutualistic association with these plants, and provide phosphate and other soil nutrients. Third, strigolactones have been identified as branching inhibition hormones in plants; when present, these compounds prevent excess bud growing in stem terminals, stopping the branching mechanism in plants. Strigolactones comprise a diverse group, but they all have core common chemical structure, as shown in the image to the right. The structure is based on a tricyclic lactone linked to a hydroxymethyl butenolide; the former is represented in the figure as the A-B-C part, while the latter is the D part of the molecule. It is important to note that most strigolactones present variations in the ABC part, but the D ring is quite constant across the different species, which led researchers to suspect that the biological activity relies on this part of the molecule. Different studies have demonstrated that the activity of the molecules is lost when the C-D section of the molecules is modified.Since strigolactones are involved in the signaling pathway required for germination of parasitic species (such as Striga sp.), they have been a proposed target to control pests and overgrowth of these parasitic organism. Using a molecule similar to strigolactones could be the key to designing a chemical and biological mechanism to stop the colonization of a plant's root by parasitic plants.

WikidataRate this definition:0.0 / 0 votes

1. Strigolactone

   Strigolactones are plant hormones that stimulate the branching and growth of symbiotic arbuscular mycorrhizal fungi, increasing the probability of contact and establishment of a symbiotic association between the plant and fungus. Strigolactones also inhibit plant shoot branching, and trigger germination of parasitic plant seeds. Strigolactones are carotenoid-derived and contain a labile ether bond that is easily hydrolyzed in the rhizosphere, meaning that there is a large concentration gradient between areas near the root and those further away. In 2009, strigolactone biosynthesis was found to be DWARF27-dependent.

How to pronounce strigolactone?

1. Alex

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Numerology

1. Chaldean Numerology

   The numerical value of strigolactone in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of strigolactone in Pythagorean Numerology is: 5

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Strigolactone
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Strigolactone
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=strigolactone