The B Vitamins as Plant Hormones

Bonner, James; Bonner, Harriet

doi:10.1016/s0083-6729(08)60459-8

Cited by 52 publications

(20 citation statements)

References 144 publications

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“…In addition. Bonner and Bonner (2) believe that an essential feature of root induction by auxins is that the active substance must have disappeared before emergence of the new roots.…”

Section: Methodsmentioning

confidence: 99%

Absorption, Distribution, and Destruction of Indoleacetic Acid in Plum Stem Cuttings

Strydom

Hartmann

1960

Plant Physiol.

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Rooting of greenwood cuttings of Marianna 2624plum (Priunus cerasifera Ehrh. X P. munsoniana Wight & Hedr.) taken in spring or summer is dependent on the presence of a certain minimum leaf area.Treatment of the basal portion of the cuttings with indoleacetic (IAA) or indolebutyric acid (IBA) sub-stantially increases the number of roots per cutting (20). The site of the auxin action is not known. Perhaps there is a direct effect at the site of application wlhere roots appear. Another possibility is that auxin stimulates mobilization of root-promoting substances from the leaves; these substances would then presumably be translocated basipetally to the site of root initiation.Although much study has been given to the absorption and translocation of auxins in intact plants, very few workers have investigated these phenomena in detached parts of woody plants. Cooper (4), using the standard Avena curvature test to follow movement of IAA in the bark of leafless lemon cuttings found initially relatively large amounts of IAA in the region of treatment; however, 95 per cent of the auxin disappeared during the 1st day, and little auxin was translocated to the apices of the cuttings. Turetskaya (24) followed the distribution of I-13 in soft and hardwood cuttings of various species treated with I'31-labeled-p-iodophenoxyacetic acid. In the hardwood cuttings the maximum I13' accumulation occurred in the base of the stem where the roots were formed. Decreasing amounts of f131 were found in xylem, bark, and buds, in that order. Turetskaya (25) followed the movement of C14-carboxyl-labeled naphthaleneacetic acid in leafy cuttings of balsam, cherry, and currant, and found some evidence that the NAA was metabolized.The present study was designed to follow the absorption, translocation, and persistence of C14 from alpha-labeled IAA in cuttings of Marianna 2624 plum. MATERIALS AND METHODS

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“…In addition. Bonner and Bonner (2) believe that an essential feature of root induction by auxins is that the active substance must have disappeared before emergence of the new roots.…”

Section: Methodsmentioning

confidence: 99%

Absorption, Distribution, and Destruction of Indoleacetic Acid in Plum Stem Cuttings

Strydom

Hartmann

1960

Plant Physiol.

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“…Such a situation could develop in roots for thiamin and niacin because roots of certain species import these vitamins from shoots (Bonner and Bonner, 1948). Intracellular deficiencies are also possible given that B vitamins and cofactors are synthesized and used in different compartments.…”

Section: What Actually Constitutes B Vitamin Deficiency?mentioning

confidence: 99%

“…plant growth regulators in today's terms; Went et al, 1938;Bonner and Bonner, 1948;Thimann, 1963). In plants, as in animals, B vitamins and hormones are biologically active in minute amounts, are transported, and lead to similarly profound consequences when deficient (Bonner and Bonner, 1948).…”

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confidence: 99%

Does Abiotic Stress Cause Functional B Vitamin Deficiency in Plants?

et al. 2016

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B vitamins are the precursors of essential metabolic cofactors but are prone to destruction under stress conditions. It is therefore a priori reasonable that stressed plants suffer B vitamin deficiencies and that certain stress symptoms are metabolic knock-on effects of these deficiencies. Given the logic of these arguments, and the existence of data to support them, it is a shock to realize that the roles of B vitamins in plant abiotic stress have had minimal attention in the literature (100-fold less than hormones) and continue to be overlooked. In this article, we therefore aim to explain the connections among B vitamins, enzyme cofactors, and stress conditions in plants. We first outline the chemistry and biochemistry of B vitamins and explore the concept of vitamin deficiency with the help of information from mammals. We then summarize classical and recent evidence for stress-induced vitamin deficiencies and for plant responses that counter these deficiencies. Lastly, we consider potential implications for agriculture.

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“…The occurrence of riboflavin in plants has long been known (Bonner, 1942;Bonner & Bonner, 1948;Watson & Nogelle, 1947), but there is no information on the concentration of flavin nucleotide coenzymes and the enzymes synthesizing these.…”

Section: (Received 15 July 1959)mentioning

confidence: 99%