Synthesis and accumulation of benzoic acid in Pinus radiata needles in response to tissue injury by dothistromin, and correlation with resistance of P. radiata families to Dothistroma pini

Franich, Robert A.; Carson, M.; Carson, S. D.

doi:10.1016/s0048-4059(86)80070-4

Cited by 44 publications

(39 citation statements)

References 15 publications

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“…This reaction by resistant plants causes cells to lose turgor, turn brown and die, while susceptible cells last considerably longer (Agrios 1988). Franich et al (1986) observed highly lignified cells flanking necrotic tissues killed by D. septosporum in radiata pine. If a hypersensitive response occurs in lodgepole pine, then some of the variation seen in Dothistroma symptom development may be due to individual tree resistance in addition to effects of microclimate.…”

Section: Hosts In Bcmentioning

confidence: 84%

“…Adjacent to the red lesions are yellow areas of necrotic tissue, sometimes flanked by areas of dark green tissue containing highly lignified cells (Franich et al 1986). The change from green to red can be sharp or interposed with yellowish areas between green area and red band (Gadgil 1967).…”

Section: The Pathogenmentioning

confidence: 99%

“…Dothistromin is broken down to oxalic acid and CO2 more efficiently in light (80% breakdown) compared to dark (5-10% breakdown) (Franich et al 1986). This breakdown may be achieved through two ways as suggested by Franich et al (1986): (1) through metabolism by dying cells, possibly by peroxidase-catalyzed oxidation using O2 or H2O2 as an oxidant; or (2) photolytic degradation in the presence of O2 or H2O2, with oxidation stopping once needle tissue has become brown and opaque, preventing the transmission of light. Given that most of the toxin is destroyed in 6 24 h, Franich et al (1986) suggests that most of the needle damage must be due to the plant's defense response rather than direct toxicity.…”

Section: The Pathogenmentioning

confidence: 99%

“…In a lab-controlled environment, bright red bands form on pine needles from dothistromin injection within five days (Franich et al 1986). Field observations of Austrian {Pinus nigra Arnold) and ponderosa (Pinus ponderosa Dougl.…”

Section: H4mentioning

confidence: 99%

“…Dothistromin is known to rapidly degrade in needle tissue (Franich et al 1986). However in the field dothistromin-containing red bands persist weeks after infection ).…”

Section: H4mentioning

confidence: 99%

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The role of weather and topography in the development of Dothistroma septosporum.

Braun¹

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Section: Hosts In Bcmentioning

confidence: 84%

Section: The Pathogenmentioning

confidence: 99%

Section: The Pathogenmentioning

confidence: 99%

Section: H4mentioning

confidence: 99%

“…Dothistromin is known to rapidly degrade in needle tissue (Franich et al 1986). However in the field dothistromin-containing red bands persist weeks after infection ).…”

Section: H4mentioning

confidence: 99%

See 3 more Smart Citations

The role of weather and topography in the development of Dothistroma septosporum.

Braun¹

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Pesticide effects on secondary metabolism of higher plants

1989

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Secondary compounds serve both endogenous and exogenous functions in higher plants because they are involved in plant growth and development as well as intraspecies and interspecies interactions. Documentation of the effects of pesticides on secondary compound biosynthesis in higher plants is increasing. While several herbicides have been reported to reduce levels of secondary compounds by non‐specific mechanisms, a few herbicides, such as alachlor and glyphosate, directly affect specific biosynthetic steps. Alachlor reduces flavonoid synthesis at a step late in the biosynthetic pathway, and glyphosate blocks synthesis of all cinnamate derivatives by inhibiting 5‐enolpyruvyl shikimate‐3‐phosphate (EPSP) synthase. Inhibition of EPSP synthase also leads to the accumulation of high levels of shikimate, benzoic acids and benzoic acid derivatives. The sulfonylureas and p‐nitro‐substituted diphenylether (DPE) herbicides can cause increases in the level of cinnamatederived phenolic compounds and the DPEs can cause dramatic increases in terpenoid stress metabolites. Certain fungicides are thought to act through enhancing the capacity of plants to produce phytoalexins. These and other data suggest that sublethal effects of pesticides on target and non‐target plants can significantly affect agricultural ecosystems by altering the synthesis of compounds important in inter‐ and intraspecies interactions.

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