Claim · model-written summary
Without nutrient stress, rust-related smaller root diameter closely related to increased SRL.
- Taxon
- Groundsel (Senecio vulgaris L.)
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Senecio vulgarise1 - Treatment
- ruste0
- Interactor
- Puccinia lagenophorae Cooke
Puccinia lagenophoraee2pathogen - Outcome
- root diametere0
- Direction
- decreasee0
- Qualifier
- in the absence of nutrient stresse0
Verbatim
e0“in the absence of nutrient stress, the decrease in root diameter caused by rust was closely related to increases in SRL”
e1“Groundsel (Senecio vulgaris L.)”
e2“Puccinia lagenophorae Cooke”
Title
N. D. PAUL; P. G. AYRES Annals of Botany 1986. doi:10.1093/oxfordjournals.aob.a087117
Other claims from this paper (15)
- Intervention effect Rust infection substantially reduced groundsel root dry weight except under severe nutrient deficiency.
- Intervention effect Rust infection had little effect on groundsel root length except under severe deficiency.
- Intervention effect Rust infection significantly increased specific root length.
- Observation Rust inhibition of root dry weight was most pronounced late in development, especially after flowering.
- Observation After flowering, control plants stopped root elongation while dry weight accumulation continued.
- Observation In rusted plants, root dry weight accumulation ceased with elongation.
- Observation Under severe nutrient deficiency, root dry weight accumulation ceased with elongation.
- Observation At high nutrient concentration late in development, adventitious roots with low SRL were produced.
- Intervention effect Rust infection did not modify adventitious root production.
- Observation SRL increases were not attributable to a single root type.
- Association SRL was inversely related to root diameter.
- Intervention effect Rust infection did not change the SRL–root diameter relationship.
- Intervention effect Nutrient deficiency changed only the intercept of the SRL–diameter relationship.
- Intervention effect At a given SRL, nutrient-stressed roots were thinner than adequately nourished roots.
- Recommendation Authors caution that root dry weight inhibition may poorly indicate potential activity changes.