Abstract
Abstract Elevated CO 2 (eCO 2 ) modifies plant primary and secondary metabolism that subsequently impacts herbivore insect performance due to changes in its nutritional requirements. This laboratory study evaluated interactions between Aphis gossypii Glover (Hemiptera: Aphididae) and melon ( Cucumis melo L., Cucurbitaceae), previously acclimated two or six weeks to different CO 2 levels, eCO 2 (700 ppm) or ambient CO 2 (400 ppm). Under eCO 2 , melon plants decreased nitrogen foliar concentration and increased carbon to nitrogen ratio, independently of acclimation period, significantly reducing the content of some amino acids (alanine, asparagine, glycine, isoleucine, lysine, serine, threonine, and valine) and increasing the carbohydrate (sucrose) content in melon leaves. The dilution in some essential amino acids for aphid nutrition could have aggravated the reduction in A. gossypii population growth reared on melon previously acclimated two weeks to eCO 2 , as well as the loss of aphid body mass from two successive generations of A. gossypii reared under eCO 2 on plants previously acclimated two or six weeks to eCO 2 . The response to eCO 2 of phloem feeders, such as aphids, is actually variable, but this study highlights a negative response of A. gossypii to this climate change driver. Potential implications on control of this pest in a global change scenario are discussed.
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Claims 9
Claim · model-written summary
Elevated CO2 decreased melon foliar nitrogen concentration.
- Taxon
- melon
.jpg?width=60)
Cucumis meloe0 - Treatment
- eCO 2e0
- Outcome
- nitrogen foliar concentratione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Under eCO 2 , melon plants decreased nitrogen foliar concentration”
Claim · model-written summary
Elevated CO2 increased melon carbon to nitrogen ratio regardless of acclimation period.
- Taxon
- melonCucumis melot0
- Outcome
- carbon to nitrogen ratioe0
- Direction
- increasede0
- Qualifier
- independently of acclimation periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased carbon to nitrogen ratio, independently of acclimation period”
t0“melon”
Claim · model-written summary
Elevated CO2 significantly reduced alanine, asparagine and glycine in melon leaves.
- Taxon
- melonCucumis melot0
- Outcome
- alanine, asparagine, glycinee0
- Direction
- reducinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly reducing the content of some amino acids (alanine, asparagine, glycine, isoleucine, lysine, serine, threonine, and valine)”
t0“melon”
Claim · model-written summary
Elevated CO2 significantly reduced isoleucine, lysine and serine in melon leaves.
- Taxon
- melonCucumis melot0
- Outcome
- isoleucine, lysine, serinee0
- Direction
- reducinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly reducing the content of some amino acids (alanine, asparagine, glycine, isoleucine, lysine, serine, threonine, and valine)”
t0“melon”
Claim · model-written summary
Elevated CO2 significantly reduced threonine and valine in melon leaves.
- Taxon
- melonCucumis melot0
- Outcome
- threonine, and valinee0
- Direction
- reducinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly reducing the content of some amino acids (alanine, asparagine, glycine, isoleucine, lysine, serine, threonine, and valine)”
t0“melon”
Claim · model-written summary
Elevated CO2 increased sucrose content in melon leaves.
- Taxon
- melonCucumis meloe0
- Organ / stage
- melon leavese0
- Outcome
- sucrose) contente0
- Direction
- increasinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing the carbohydrate (sucrose) content in melon leaves”
Claim · model-written summary
Aphid population growth was reduced on melon acclimated to elevated CO2 for two weeks.
- Taxon
- melonCucumis meloe0
- Interactor
- A. gossypii
Aphis gossypiie0pest - Outcome
- A. gossypii population growthe0
- Direction
- reductione0
- Qualifier
- two weeks to eCO 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduction in A. gossypii population growth reared on melon previously acclimated two weeks to eCO 2”
Claim · model-written summary
Aphids lost body mass across two generations on melon acclimated two or six weeks to elevated CO2.
- Taxon
- melonCucumis melot0
- Interactor
- A. gossypiiAphis gossypiie0pest
- Outcome
- aphid body masse0
- Direction
- losse0
- Qualifier
- two or six weeks to eCO 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“loss of aphid body mass from two successive generations of A. gossypii reared under eCO 2 on plants previously acclimated two or six weeks to eCO 2”
t0“melon”
Claim · model-written summary
Reduced essential amino acids may have aggravated aphid population decline and body mass loss.
- Taxon
- melonCucumis melot0
- Interactor
- A. gossypiiAphis gossypiie0pest
- Outcome
- reduction in A. gossypii population growthe0
- Qualifier
- dilution in some essential amino acidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dilution in some essential amino acids for aphid nutrition could have aggravated the reduction in A. gossypii population growth”
t0“melon”
The same questions in other papers
co2 · molecular: metabolites · Cucumis melo (muskmelon)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- negative
2 papers more in this group
See all 6 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.