What does opines mean in biology?

What does opines mean in biology?

Opines are low molecular weight compounds found in plant crown gall tumors or hairy root tumors produced by pathogenic bacteria of the genus Agrobacterium and Rhizobium. The opines are used by the bacterium as an important energy, carbon and nitrogen source.

What do opines do?

Opines are a class of carbohydrate derivatives that serve as a nutrient source for the agrobacteria, and which incorporate several d-fructose–amino acids and related molecules.

What is the main function of opines in relation to plant genetic transformation?

Opines are secreted by the neoplastic cells and are used as a sole carbon, nitrogen, and energy source by the agrobacteria that induced the tumor.

What is octopine and nopaline?

Octopine and nopaline strains of Agrobacterium tumefaciens were found to differ in virulence on Nicotiana glauca. This difference is due to the absence of a functional virF locus, which is necessary for efficient tumorigenesis on N. glauca, from the nopaline Ti plasmids.

How do you use opined?

Opined sentence example

1. I opined to keep Quinn and Martha out of the picture, at least at present.
2. When pressed, they opined only that Brandon Westlake acted more suicidal than threatening but they had been with him for several minutes where Lydia had just arrived.

Is there such a word as opined?

verb (used with or without object), o·pined, o·pin·ing. to hold or express an opinion.

Whats the meaning of opines?

express opinions
: to express opinions You may opine about anything you want. transitive verb. : to state as an opinion opined that the nominee was not fit to serve on the Supreme Court.

What do you mean by opined?

: to express opinions You may opine about anything you want. transitive verb. : to state as an opinion opined that the nominee was not fit to serve on the Supreme Court.

How and why do the bacteria cause the plants to make opines?

The genes in this insertion stimulate the synthesis of plant growth hormones, which cause a tumerous proliferation of plant cells that leads to a blight known as crown gall disease. And those genes instruct the plant to produce opines–compounds containing the carbon and nitrogen Agrobacterium lives on.

What is nopaline synthase?

Nopaline synthase is an enzyme which catalyses the synthesis of nopaline, an opine which is formed as the result of the condensation of the amino acid arginine and alpha-ketoglutaric acid. The type of opine produced is specific to the particular strain of A. tumefaciens.

What is the meaning of Octopine?

Octopine meaning (chemistry) An analog of lactic acid, derived from the amino acids arginine and alanine, first isolated from the muscle tissue of octopus species. noun. 1. Of or pertaining to an octopus or octopuses.

What is the dictionary definition of the word opined?

Define opined. opined synonyms, opined pronunciation, opined translation, English dictionary definition of opined. v. o·pined , o·pin·ing , o·pines v. tr. To state as an opinion.

Which is the best example of the word opine?

The term derives from the Middle French opiner (“to express one’s opinion”) and the Latin opinari, meaning “to have an opinion or “to think.”. Examples of opine in a Sentence. Many people opine that the content of Web pages should be better regulated. You can opine about any subject you like.

How long has the word opine been around?

Opine has been around since the 15th century, and while it certainly is not a rare word today, not everyone is inclined to take it seriously. Commentators have described it as a stilted word, appropriate only in facetious use – and it does have an undeniable tendency to turn up in humorous writing.

Which is the first member of the opine family?

Octopine ( N2 – (D-1-carboxyethyl)-L-arginine) is the first opine discovered in 1927 in octopus muscle and later in crown gall tumors. It is also found in other cephalopod species and lamellibranchs. It is the head member of the octopine family of opines.