Resistance to Alternaria brassicae and phytoalexin-elicitation in rapeseed and other crucifers

Conn, K. L.; Tewari, J. P.; Dahiya, Jagroop S.

doi:10.1016/0168-9452(88)90180-x

Cited by 92 publications

(46 citation statements)

References 5 publications

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“…All the C. sativa accessions tested were uniform in height, matured relatively early and some had yields competitive with those of the Brassica oilseeds. Other positive attributes of C. sativa include a favourable response to low-input farming practices (Putnam et al 1993;Schuster and Friedt 1995;Zubr 1997), disease resistance (Salisbury 1987;Conn et al 1988) and the lack of seed dormancy (Robinson 1987), which would make the control of volunteer plants in other crops following C. sativa relatively simple. Furthermore, the prospects of developing improved germplasm for particular western Canadian environments are good.…”

Section: Discussionmentioning

confidence: 99%

Agronomic and seed quality evaluation of Camelina sativa in western Canada

Gugel¹,

Falk²

2006

Can. J. Plant Sci.

215

127

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Renewed interest in Camelina sativa is primarily due to the unique fatty acid profile of the seed oil and its potential value in industry, cosmetics and human nutrition. To exploit C. sativa in western Canada, more information is needed on the performance of this crop in this region. Following a preliminary evaluation in 2001, replicated agronomic trials were conducted in 2002 and 2005 with 19 C. sativa and three oilseed Brassica accessions at Saskatoon and Scott, Saskatchewan and Beaverlodge, Alberta. The C. sativa accessions matured relatively early and were more tolerant of drought and flea beetle infestations than the Brassica oilseeds. Some C. sativa accessions had seed yields competitive with those of the Brassica oilseeds, but seed size was significantly smaller. Seed yields and oil contents of all crop species tested were highest at Beaverlodge, the most northern location. The Brassica oilseeds generally had higher oil contents than C. sativa; the highest oil contents of each crop species tested were associated with the lowest protein contents. In general, average oil and protein contents for C. sativa ranged from 38 to 43% and from 27 to 32%, respectively; for the Brassica checks, oil and protein contents ranged from 38 to 53% and from 21 to 33%, respectively, across all species. Variation in fatty acid composition was higher among the C. sativa accessions than among locations, but overall the ranges of individual fatty acids were relatively narrow. The most abundant fatty acids were oleic (12.8–14.7%), linoleic (16.3–17.2%), linolenic (36.2–39.4%) and eicosenoic (14.0–15.5%). The prospects of developing improved C. sativa germplasm for particular western Canadian environments are good; of primary importance are increased seed size and oil content. Additionally, stand establishment, fertility requirements and broadleaf weed control options need to be investigated. Acceptance of this species as a new oilseed crop for western Canada will also require developing sustainable markets for the oil and meal. Key words: Camelina sativa, seed quality, agronomic trait, oil and protein content, fatty acid

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Section: Discussionmentioning

confidence: 99%

Agronomic and seed quality evaluation of Camelina sativa in western Canada

Gugel¹,

Falk²

2006

Can. J. Plant Sci.

215

127

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“…Sacc. is associated with the production of phytoalexins (Conn et al 1988;Jejelowo et al 1991 ). Thèse phytoalexins were subsequently identified as camalexin and 6-methoxycamalexin (Browne et al 1991).…”

Section: Introductionmentioning

confidence: 99%

“…Because of récent interest in thèse compounds Gross 1993;Pedras et al 1997;Tsuji et al 1993), we report on the isolation of thèse compounds, and a new related compound, from shepherd's purse [Capsella bursa-pastoris (L.) Medic] challenged with A. brassicae. Capsella bursa-pastoris is a common weed belonging to the family Brassicaeae and is highly résistant to A. brassicae and A. brassicicola Groves & S ko I ko (Conn et al 1988;Sigareva and Earle 1997;Tewari and Conn 1993). It is also cold tolérant, short life-cycled, and résistant to flea beetles (Bonfils et al 1991;Sigareva and Earle 1997).…”

Section: Introductionmentioning

confidence: 99%

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Phytoalexins produced in the leaves of Capsella bursa-pastoris (shepherd’s purse)

Jiménez¹,

Ayer²,

Tewari³

2005

phyto

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Three phytoalexins, camalexin (C11H8N2S), 6-methoxycamalexin (C12H10N2SO), and N-methylcamalexin (C12H10N2S), were isolated from shepherd's purse (Capsella bursa-pastoris) challenged by Alternaria brassicae. N-methylcamalexin has not been reported previously. Phytoalexin elicitation in shepherd's purse is associated with its resistance to A. brassicae, a pathogen which causes an important disease of cruciferous crops in many parts of the world.

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“…The oilseed crops, B. napus, B. carinata and S. alba have relatively more epicuticular wax than B. rapa and B. juncea and tend to be less sensitive to A. blight. Resistance of rapeseed-mustard against A. blight is also found to be related with many factors like deterrence to conidial retention on surface of plant like high deposits of epicuticular wax that result a physical obstacle as a hydrophobic coating to decrease deposition of water-borne inoculum [4,14].…”

Section: Results and Discussion:-mentioning

confidence: 99%

Assessment of Different Brassica Germplasms Against Alternariablight and Its Management Using Naturally Occurring Chemicals

Raza¹,

Imran²,

Arshad³

et al. 2016

IJAR

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In the present study, sixteen advance lines/cultivars of Brssica napus and Brassica juncea were screened out against Alternaria blight of brassica (Alternaria brassicae). Out of eight lines/cultivars of B. napus, no line was found to immune against A. brassicae. Legend, Oscar, and Dgl were moderately resistant under field conditions and Shiralee was highly susceptible to A. blight. Similarly in B. juncea, no line was observed immune; Khanpur rya, Rya anmol, AUB 99 and SM 8300 were moderately resistant and B527-1 was highly susceptible to A. blight. In this study, three different plants extract (Ginger, Garlic and Turmeric) with 0.1%, 0.2% and 0.3% concentrations were evaluated against A. blight. The disease severity for all the plant extracts varied significantly at three different concentrations. Among these plant extracts, Turmeric (Curcuma longa) with 0.3% concentration gave significant result regarding disease intensity (12.74%) over control (26.86%). Similarly, these plant extracts with different concentrations were used to check their efficacy on yield (kg/ha) parameter. Turmeric with 0.3% concentration gave the satisfactory result to increase the yield (1545.33 kg/ha) as compare to untreated control (1086 kg/ha).Copy Right, IJAR, 2016,. All rights reserved.

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Resistance to Alternaria brassicae and phytoalexin-elicitation in rapeseed and other crucifers

Cited by 92 publications

References 5 publications

Agronomic and seed quality evaluation of Camelina sativa in western Canada

Agronomic and seed quality evaluation of Camelina sativa in western Canada

Phytoalexins produced in the leaves of Capsella bursa-pastoris (shepherd’s purse)

Assessment of Different Brassica Germplasms Against Alternariablight and Its Management Using Naturally Occurring Chemicals

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