Effect of kinetin on the content of endogenous gibberellins in germinating seeds of some plant species

Marian Michniewicz; Aniela Kamieńska

doi:10.1007/bf00636648

Effects of selected trace metals on germinating seeds of six plant species

Water Air & Soil Pollution ◽

10.1007/bf00211832 ◽

1991 ◽

Vol 59 (3-4) ◽

pp. 231-240 ◽

Cited By ~ 43

Author(s):

Claire L. Carlson ◽

Domy C. Adriano ◽

Kenneth S. Sajwan ◽

Steven L. Abels ◽

David P. Thoma ◽

...

Keyword(s):

Trace Metals ◽

Plant Species ◽

Germinating Seeds

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Gaseous and volatile exudates from germinating seeds and seedlings

Canadian Journal of Botany ◽

10.1139/b76-049 ◽

1976 ◽

Vol 54 (5-6) ◽

pp. 518-532 ◽

Cited By ~ 26

Author(s):

V. Vančura ◽

G. Stotzky

Keyword(s):

Gas Chromatography ◽

Formic Acid ◽

Volatile Compounds ◽

Plant Species ◽

Qualitative And Quantitative ◽

Volatile Metabolites ◽

Ecological Implications ◽

Organic Volatiles ◽

Yellow Pine ◽

Germinating Seeds

The quantities of gaseous and volatile metabolites liberated by germinating seeds and seedlings appeared to be related, in general, to the amount of storage substances present in the seeds. Both qualitative and quantitative differences were found between various plant species and varieties of both angiosperms and gymnosperms. The release of volatile compounds preceded the appearance of the first root and, with most seeds, was greatest in the first 24 to 48 h. Organic volatiles could be detected, by gas chromatography, in as little as 5% of the atmosphere from one germinating seed. All seeds that were studied liberated ethanol, and most seeds evolved methanol, formaldehyde, acetaldehyde, formic acid, ethylene, and propylene. Propionaldehyde and (or) acetone was also evolved by cotton, pea, and yellow pine. The possible source of these volatile metabolites and their ecological implications are discussed.

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A molecular framework for the embryo growth in germinating seeds of Solanum lycocarpum A. St.‐Hil., a nurse plant species

Annals of Applied Biology ◽

10.1111/aab.12523 ◽

2019 ◽

Vol 175 (2) ◽

pp. 136-145 ◽

Cited By ~ 4

Author(s):

Lilian E. D. Silveira ◽

João Paulo Ribeiro‐Oliveira ◽

Daiani Ajala‐Luccas ◽

Juliana P. Bravo ◽

Edvaldo A. A. Silva

Keyword(s):

Plant Species ◽

Nurse Plant ◽

Germinating Seeds ◽

Molecular Framework

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Integrative Theory of the Mode of Action of Quinclorac: Literature Review1

Planta Daninha ◽

10.1590/s0100-83582016340200020 ◽

2016 ◽

Vol 34 (2) ◽

pp. 393-402 ◽

Cited By ~ 2

Author(s):

M.V. FIPKE ◽

R.A. VIDAL

Keyword(s):

Plant Species ◽

Mode Of Action ◽

Growth Stage ◽

Harmful Effect ◽

Grass Species ◽

Oxygen Species ◽

Weed Species ◽

Present Evidence ◽

Integrative Theory ◽

Germinating Seeds

ABSTRACT Quinclorac is a systemic herbicide absorbed by germinating seeds, roots and leaves of seedlings. It is a selective compound for crops such as rice, canola, barley, corn, sorghum, and pasture. Quinclorac can be used to control various monocots and dicotyledonous weed species. The biochemical function of this herbicide in the plant has intrigued scientists for nearly four decades. The objectives of this review are to present evidence of three hypotheses on the biochemical functioning of quinclorac and to propose an integrative mode of action. The first theory on the mode of action of quinclorac is supported by evidence of inhibition of incorporation of C14-glucose into cellulose and hemicellulose, thus, affecting the cell wall synthesis. The second hypothesis suggests that quinclorac acts as an auxin in broadleaved weed species. In grass species, however, this herbicide appears to stimulate the activity of the 1-aminocyclopropane-1-carboxylate synthase enzyme and, subsequently, to increase the ethylene production; also, it seems to increase the cyanide acid content to phytotoxic levels. A third hypothesis to explain the harmful effect in some plant species is the formation of reactive oxygen species (ROS). Apparently, these processes are not mutually exclusive; therefore, an integrative theory for the action of quinclorac is suggested. It is theorized that the aforementioned biochemical activities are interconnected and can be the phytotoxic backbone to explain the herbicidal effect depending on the plant species and the plant growth stage, among other factors.

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