Influence of sodium humate and nutritive conditions on the content of nucleic acids, particularly on the ribosomal ribonucleic acid in wheat roots

Fialová, Svatava

doi:10.1007/bf02920726

Cited by 12 publications

(5 citation statements)

References 17 publications

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“…Although the stimulatory concentrations of humate, as determined in this study, are considerably higher than those reported by various authors for soil-derived humate (Fialova, 1969;Lee and Bartlett, 1976;Mylonas and McCants, 1980), it should be borne in mind that the concentrations used represent the dry matter content of the oxicoal product. The active fraction of this product could constitute only a small percentage of the total dry mass.…”

Section: Discussioncontrasting

confidence: 40%

Stimulation of seedling root growth by coal-derived sodium humate

Venter

Furter

Dekker³

et al. 1991

Plant Soil

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Coal-derived sodium humate was found to stimulate primary root growth of seedlings of cantaloupe (Cucumis melo L.) at 1000mg L -1, lettuce (Lactuca sativa L.) and onion (Allium cepa L.) at 500 and 1000 mg L 1, as well as hypocotyl growth of cantaloupe at 1000 mg L-~. Growth enhancement was not due to release of nutrient elements by the product, and, in the case of lettuce and onion, was not due to increased availability or uptake of mineral elements. Growth stimulation of cantaloupe, however, was dependent on the provision of nutrient solution. Growth stimulation of onion roots under axenic conditions indicated an effect of the humate per se rather than a response mediated via microbial breakdown products.

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Section: Discussioncontrasting

confidence: 40%

Stimulation of seedling root growth by coal-derived sodium humate

Venter

Furter

Dekker³

et al. 1991

Plant Soil

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“…[24,25] The snap bean treated with a low-molecular weight faction (HS1) had the greatest length of total roots and greatest surface area, while those treated with SED and control had the lowest values of the two traits ( Table 2). The total length of roots treated with HS1 was 2, 6, 7, 11, 65, and 105% greater than those treated with HS2, IM, HS, SED, and the control, respectively.…”

Section: The Effect Of Different Fractions Of Has On Plant Growthmentioning

confidence: 99%

Characterization of humic acids derived from Leonardite using a solid-state NMR spectroscopy and effects of humic acids on growth and nutrient uptake of snap bean

Sun

Ding

et al. 2015

Chemical Speciation & Bioavailability

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Understanding chemistry and the effects of humic substances on plant growth is important for using organic fertilizer or soil amendment for sustainable snap bean production. The objective of this study was to characterize different fractions of humic acid (HA) derived from Leonardite and evaluate their effects on seedling growth and nutrient uptake of snap bean (Phaseolus vulgaris L.). HAs extracted from Leonardite were separated based on molecular weights into three fractions (HS1, HS2, HS3) plus sediment (SED). With direct polarization combined with spectral editing techniques, functional groups of HAs were quantified and the results indicated that HAs with low molecular weights had more O-alkyl and carboxyl C groups than those with large molecular sizes. A plant growth experiment was conducted as a randomized split-plot design with three replications and repeated for three plantings. The results show that addition of HAs was beneficial to leaf and root growth of snap bean compared with the control (no HA). Plants treated with low-molecular weight HAs had significantly greater root length, root surface area, and uptake of potassium by shoot than those treated with other HAs, while leaf growth was affected mainly by HAs with high molecular weight.

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“…Unfractionated HS, such as Na-humates, were reported as important to plant growth and nucleic acids metabolism (Fialová 1969). Interestingly, it was observed that the pre-cultivation of wheat plants in Na-humate resulted in intensive growth of roots and RNA accumulation in wheat.…”

Section: Technologies and Commercial Use Of Humic Substancesmentioning

confidence: 99%

Plant physiology as affected by humified organic matter

Zandonadi¹,

Santos²,

Busato³

et al. 2013

Theor. Exp. Plant Physiol.

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ABSTRACT:Since the beginning of Human civilization, the soil organic matter has been used as plant growth promoter and/or regulator.Indeed, early in plant science history, even before the auxin concept has been established, the term "auximones" was coined to describe plant growth promoting humic acids derived from peat. Despite of this, until the end of the 20 th century, humic substances remained as some of the most neglected environment signals in plant physiology research. However, this scenario has changed in last decade with the discovery that the major systems of energy transduction of the plant cell membranes, the proton pumps, can be tightly orchestrated by humic substances just as elicited by a hormonal signaling. Differential activations of both plasma membrane (PM H + -ATPase) and vacuolar pumps (V-ATPase and H + -PPase) are modulated by humic substances triggering ion signatures related to specific patterns of plant growth and development. Phytohormones have been found to be associated with this humus bioactivity, and nitric oxide acting as a second messenger in a signaling pathway in which plants can sense the soil environment to cope with specific conditions. In this review, we discuss some of the most influential data available in literature, which have shaped this underexplored interface between the chemistry of the organic matter and the plant physiology. The key role of organic matter in the sustainable agriculture will also be highlighted from a biochemical perspective of the plant cell responses to biofertilization, specially in tropical environments.

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Influence of sodium humate and nutritive conditions on the content of nucleic acids, particularly on the ribosomal ribonucleic acid in wheat roots

Cited by 12 publications

References 17 publications

Stimulation of seedling root growth by coal-derived sodium humate

Stimulation of seedling root growth by coal-derived sodium humate

Characterization of humic acids derived from Leonardite using a solid-state NMR spectroscopy and effects of humic acids on growth and nutrient uptake of snap bean

Plant physiology as affected by humified organic matter

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