Factors Affecting Root Exudation Ii: 1970–1978

Hale, Maynard G.; Moore, Laurence J.

doi:10.1016/s0065-2113(08)60137-6

Cited by 109 publications

(30 citation statements)

References 91 publications

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“…A large number of studies have been conducted on root exudates (Hale and Moore 1979;Lynch and Whipps 1990), and various mechanisms of release have been proposed. The release of low molecular weight components from degenerated epidermal and cortical tissues and sloughing off of root cap materials have been cited as some of the pathways of N release (Martin 1977;Moore and McClelen 1983).…”

Section: Discussionmentioning

confidence: 99%

Temperature effects on root nodule activity and nitrogen release in some sub-tropical and temperate legumes

Ofosu-Budu¹,

Ogata²,

Fujita³

1992

Soil Science and Plant Nutrition

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Section: Discussionmentioning

confidence: 99%

Temperature effects on root nodule activity and nitrogen release in some sub-tropical and temperate legumes

Ofosu-Budu¹,

Ogata²,

Fujita³

1992

Soil Science and Plant Nutrition

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“…The rhizosphere studies conducted so far, including those on rhizosphere effect and root exudation in particular, are largely based on short duration species [9,26,31,33]. APPLIED [1,23].…”

Section: Introductionmentioning

confidence: 99%

The Rhizosphere Effect in Trees of the Indian Central Himalaya With Special Reference to Altitude

Pandey¹,

Pant²,

Bhavan³

2007

Appl Ecol Env Res

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Abstract. The present paper deals with the rhizosphere effect exerted on the microbial communities by ten representative and important tree species of the Indian Himalayan region. The study covered a wide altitudinal range (1200 to 3610 m above mean sea level) representing subtropical to subalpine climatic conditions. The rhizosphere to soil (R:S) ratio was found to range from 0.2 to 3.5, 0.3 to 2.9, and 0.3 to 3.4, for bacteria, actinomycetes and fungi, respectively. Barring a few exceptions, generally the tree species of subtropical and temperate regions exerted a slight stimulatory effect on the rhizosphere microorganisms. Coniferous species of the subtropical and temperate locations viz., Cedrus, Pinus and Taxus supported relatively higher microbial population in the rhizosphere in comparison to other species. Abies pindrow (a conifer), Betula utilis, and Rhododendron campanulatum, species of the subalpine region were found to exert a distinct negative rhizosphere effect. The negative rhizosphere effect coincided with lowering of the soil pH in the rhizosphere region.

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“…When seedlings are sufficiently tall, the lid is removed and glass beads are poured on the wire mesh to prevent aerial contamination. Hale et al (37,38) used gnobiotic culture of plants for collection of root exudate. The experimental system, for cultivation of plants in axenic cultures and collection of root exudate as used by Prikryl and Vancura (72) is shown in Fig.…”

Section: Il)mentioning

confidence: 99%

“…First direct reference for relation of root exudates to the rhizosphere effect came from studies of Hale and Moore (37). However the contribution for clearly establishing the concept of root exudates goes to Knudson and Smith (53) who showed that pea and maize grown under aseptic conditions produced considerable concentrations of sugars.…”

Section: Introductionmentioning

confidence: 99%

Root Exudate — Biology

Gupta

Mukerji

2002

Techniques in Mycorrhizal Studies

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Root exudation is an important ecological phenomenon which can manipulate plant and microbial succession. Under sterile conditions only 5-10% of the fixed carbon is released by roots compared to 12-18% released from roots in nonsterile soil and the increase is attributed to rhizosphere microtlora. There is more exudation by symbiotic plants. Different techniques for collection and analysis of constituents of root exudates has been described. Various factors governing the rate of exudation has also been given.

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Factors Affecting Root Exudation Ii: 1970–1978

Cited by 109 publications

References 91 publications

Temperature effects on root nodule activity and nitrogen release in some sub-tropical and temperate legumes

Temperature effects on root nodule activity and nitrogen release in some sub-tropical and temperate legumes

The Rhizosphere Effect in Trees of the Indian Central Himalaya With Special Reference to Altitude

Root Exudate — Biology

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