Abstract
Elevated O3 can alter the phenotypes of host plants particularly in induction of leaf senescence, but few reports examine the involvement of phytohormone in O3-induced changes in host phenotypes that influence the foraging quality for insects. Here, we used an ethylene receptor mutant Nr and its wild-type to determine the role of the ethylene signaling pathway in O3-induced leaf senescence, and bottom-up effects on the performance of Bemisia tabaci in field open top chambers (OTCs). Our results showed that elevated O3 reduced photosynthetic efficiency and chlorophyll content and induced leaf senescence of plant regardless of plant genotype. Leaf senescence in Nr plants was alleviated relative to wild-type under elevated O3. Further analyses of foliar quality showed that elevated O3 had little effect on phytohormone-mediated defenses, but significantly increased the concentration of amino acids in two plant genotypes. Furthermore, Nr plants had lower amino acid content relative to wild-type under elevated O3. These results provided an explanation of O3-induced increase in abundance of B. tabaci. We concluded that O3-induced senescence of plant was ET signal-dependent, and positive effects of O3-induced leaf senescence on the performance of B. tabaci largely resulted from changes of nutritional quality of host plants.
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Claims 9
Claim · model-written summary
Elevated O3 reduced photosynthetic efficiency and chlorophyll content in tomato.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- elevated O3e0
- Outcome
- photosynthetic efficiency and chlorophyll contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“O3-Induced Leaf Senescence in Tomato Plants”
e0“elevated O3 reduced photosynthetic efficiency and chlorophyll content and induced leaf senescence of plant regardless of plant genotype”
Claim · model-written summary
Elevated O3 induced leaf senescence in tomato regardless of plant genotype.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- elevated O3e0
- Outcome
- leaf senescencee0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“O3-Induced Leaf Senescence in Tomato Plants”
e0“elevated O3 reduced photosynthetic efficiency and chlorophyll content and induced leaf senescence of plant regardless of plant genotype”
Claim · model-written summary
Leaf senescence in the Nr ethylene receptor mutant was alleviated relative to wild-type under elevated O3.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- Nre1
- Treatment
- elevated O3e1
- Outcome
- Leaf senescencee1
- Direction
- alleviatede1
- Comparator
- wild-typee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“O3-Induced Leaf Senescence in Tomato Plants”
e1“Leaf senescence in Nr plants was alleviated relative to wild-type under elevated O3”
Claim · model-written summary
Elevated O3 had little effect on phytohormone-mediated defenses in tomato.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- elevated O3e2
- Outcome
- phytohormone-mediated defensese2
- Direction
- little effecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“O3-Induced Leaf Senescence in Tomato Plants”
e2“elevated O3 had little effect on phytohormone-mediated defenses, but significantly increased the concentration of amino acids in two plant genotypes”
Claim · model-written summary
Elevated O3 significantly increased the concentration of amino acids in two tomato genotypes.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- elevated O3e2
- Outcome
- concentration of amino acidse2
- Direction
- increasede2
- Qualifier
- in two plant genotypese2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“O3-Induced Leaf Senescence in Tomato Plants”
e2“elevated O3 had little effect on phytohormone-mediated defenses, but significantly increased the concentration of amino acids in two plant genotypes”
Claim · model-written summary
Nr plants had lower amino acid content than wild-type under elevated O3.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- Nre3
- Treatment
- elevated O3e3
- Outcome
- amino acid contente3
- Direction
- lowere3
- Comparator
- wild-typee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“O3-Induced Leaf Senescence in Tomato Plants”
e3“Nr plants had lower amino acid content relative to wild-type under elevated O3”
Claim · model-written summary
Elevated O3 increased the abundance of Bemisia tabaci on tomato.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- O3e4
- Interactor
- B. tabaci
Bemisia tabacie4pest - Outcome
- abundance of B. tabacie4
- Direction
- increasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“O3-Induced Leaf Senescence in Tomato Plants”
e4“These results provided an explanation of O3-induced increase in abundance of B. tabaci”
Claim · model-written summary
Positive effects of O3-induced leaf senescence on B. tabaci performance largely resulted from changes in the nutritional quality of tomato plants.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- O3-induced leaf senescencee5
- Interactor
- B. tabaciBemisia tabacie5pest
- Outcome
- performance of B. tabacie5
- Qualifier
- changes of nutritional quality of host plantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“O3-Induced Leaf Senescence in Tomato Plants”
e5“positive effects of O3-induced leaf senescence on the performance of B. tabaci largely resulted from changes of nutritional quality of host plants”
Claim · model-written summary
O3-induced senescence of tomato plants depends on the ethylene signal.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- senescence of plante6
- Qualifier
- ET signal-dependente6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“O3-Induced Leaf Senescence in Tomato Plants”
e6“O3-induced senescence of plant was ET signal-dependent”
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