A Comparative Study of the Haustorial Development of Striga asiatica (L.) Kuntze on Sorghum Cultivars

Maiti, Ratikanta; Ramaiah, K.; Bisen, S. S.; Chidley, V. L.

doi:10.1093/oxfordjournals.aob.a086816

Cited by 89 publications

(80 citation statements)

References 3 publications

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“…These results suggest that Si in rice leaves is involved in the water relations of cells, such as mechanical properties and water permeability. Maiti et al (1984) and Lux et al (1999) suggested that depositions of Si on the endodermal cells might protect vascular tissues against the invasion of parasites and the effects of drying soil via the mechanical hardening of root endodermal cells. In this experiment, the effect of Si on RWC content was higher in the tillering stage than in the 4 th leaf stage (Figure 1).…”

Section: Discussionmentioning

confidence: 99%

Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stress

Ahmad¹,

Haddad²

2011

Czech J. Genet. Plant Breed.

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Abstract:The effect of silicon (Si) was investigated on the major antioxidant enzyme activities including superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), peroxidase (POD), relative water content (RWC), chlorophyll and soluble protein contents, proline (Pro) and glycine betaine (GB) accumulation in three different growth stages (2 nd , 4 th leaf and tillering stages) of wheat (Triticum aestivum L.) plants under drought stress. The experiment was performed in a completely randomized design for three treatments including control, drought and Si-drought (2mM silicate sodium/kg) with three replications in a greenhouse. The results indicated that Si partially offset the negative impacts of drought stress increasing the tolerance of wheat by rising Pro and GB accumulation and soluble protein content. Compared with the plants treated with drought, applied Si significantly enhanced the activities of SOD, CAT, APX and POD. In contrast, drought stress caused a considerable decrease in RWC, chlorophyll and soluble protein contents. This Si effect was time-dependent and became stronger in the tillering stage. The results of the present experiment coincided with the conclusion that Si alleviates water deficit of wheat by preventing the oxidative membrane damage and may be associated with plant osmotic adjustment.

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Section: Discussionmentioning

confidence: 99%

Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stress

Ahmad¹,

Haddad²

2011

Czech J. Genet. Plant Breed.

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“…Little is known about the influence of nitrogen on the subsequent development of functional haustoria. Indeed, our understanding of the mechanisms involved in establishing vascular continuity within the host is poor, but it seems that cell-wall-degrading enzymes may play some role in the penetration process (Okonkwo & Nwoke, 1978;Maiti et al, 1984;Nagar, Singh & Sanwal, 1984). In Phlebia tremellosa, a white-rot fungus, supplementary nitrogen delayed the appearance of lignin-degrading activity (Reid, 1991).…”

Section: Discussionmentioning

confidence: 99%

Nitrogen relations of the sorghum‐Striga hermonthica host‐parasite association: germination, attachment and early growth

1993

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SUMMARYThe probability of the parasitic angiosperm Striga hermonthica achieving a successful union with its sorghum host is in part dependent on the concentration of ammonium nitrate in the growth medium. Germination rates were higher with 1 mM than with 3 mM ammonium nitrate. Ammonium nitrate did not influence either the stability of active components of host root exudate, or their perception by the parasite's seed. High concentrations of ammonium nitrate did not significantly reduce the leakage of potassium ions from sorghum roots (although patterns of exudation may differ between groups of compounds). Thus, it appears that ammonium nitrate reduced either the production of stimulatory compounds, or their specific leakage from host roots. Subsequent attachment of the parasite radicle and early growth of the plant were also lower at higher concentration of ammonium nitrate, and possible reasons for these observations are discussed.

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“…According to Slife (114), it is the most widespread and serious of all seed plants that are crop parasites. Its haustoria penetrate into the host roots; the degree to which this takes place varies depending on the host genotype and the thickness of the host root endodermis and pericycle due to the degree of their lignification, silicification, and possibly other factors (115,116). No clear-cut correlation has been shown, however, between the degree of resistance and silicification.…”

Section: Silicon and Growthmentioning

confidence: 99%

The anomaly of silicon in plant biology.

Epstein

1994

Proc. Natl. Acad. Sci. U.S.A.

1,471

943

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A Comparative Study of the Haustorial Development of Striga asiatica (L.) Kuntze on Sorghum Cultivars

Cited by 89 publications

References 3 publications

Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stress

Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stress

Nitrogen relations of the sorghum‐Striga hermonthica host‐parasite association: germination, attachment and early growth

The anomaly of silicon in plant biology.

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