Nitrogen Metabolism of Ragi Plants in Relation to Helminthosporiose Disease Resistance

Vidhyasekaran, P.

doi:10.1111/j.1439-0434.1972.tb02619.x

Cited by 8 publications

(2 citation statements)

References 15 publications

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“…The critical test for phytotoxicity is the induction of partial or complete disease symptoms following infiltration into the intact host (Rudolph, 1976;Vidyasekaran, 1972). The development of necrotic spots following inoculation of mango leaves with partially purified phytotoxin is similar to the effect of colletotrichins on tobacco leaves (Duke et al, 1992).…”

Section: Discussionmentioning

confidence: 98%

Responses of embryogenic mango cultures and seedling bioassays to a partially purified phytotoxin produced by a mango leaf isolate of Colletotrichum gloeosporioides penz

Subramanian

Litz

Gray

et al. 1999

In Vitro Cell.Dev.Biol.-Plant

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Colletotrichum gloeosporioides Penz., the causal agent of mango anthracnose, produces a phytotoxin in vitro. The partially purified phytotoxin, presumably colletotrichin, caused anthracnose-like symptoms on young mango leaves, was toxic to embryogenic suspension cultures of two mango cultivars, 'Hindi' and 'Carabao,' and inhibited in vitro seed germination of two nonhosts, lettuce and tobacco. There were linear relationships between concentration of the partially purified phytotoxin and mortality of mango embryogenic cultures. Embryogenic cultures grown in the presence of the partially purified phytotoxin showed significantly lower growth rates than the controls. Similarly, embryogenic cultures grown in the presence of 40% (vol/vol) fungal culture filtrate showed significantly lower growth rates than unchallenged controls. Medium containing 40% (vol/vol) Czapek-Dox fungal broth did not reduce growth of embryogenic cultures, indicating the production of phytotoxin in vitro. The results suggest that either fungal culture filtrate or purified phytotoxin can be used as in vitro selection agents to screen for resistance to this fungus.

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Section: Discussionmentioning

confidence: 98%

Responses of embryogenic mango cultures and seedling bioassays to a partially purified phytotoxin produced by a mango leaf isolate of Colletotrichum gloeosporioides penz

Subramanian

Litz

Gray

et al. 1999

In Vitro Cell.Dev.Biol.-Plant

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“…Vidhyasekaran (79) noted that in culture, ammonia salts induced more growth of Helminthosporium spp. than did nitrate salts.…”

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confidence: 99%

The effect of nitrogen (source) and leaf age on free amino acid and soluble sugar content of Poa pratensis and on predispostion to infection by Bipolaris sorokiniana

Robinson

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Non-specific Toxins

Rudolph¹

1976

Physiological Plant Pathology

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Nitrogen Metabolism of Ragi Plants in Relation to Helminthosporiose Disease Resistance

Cited by 8 publications

References 15 publications

Responses of embryogenic mango cultures and seedling bioassays to a partially purified phytotoxin produced by a mango leaf isolate of Colletotrichum gloeosporioides penz

Responses of embryogenic mango cultures and seedling bioassays to a partially purified phytotoxin produced by a mango leaf isolate of Colletotrichum gloeosporioides penz

The effect of nitrogen (source) and leaf age on free amino acid and soluble sugar content of Poa pratensis and on predispostion to infection by Bipolaris sorokiniana

Non-specific Toxins

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