Abstract
The heavy metal zinc (Zn) is known to be transmitted in the food chain; however, the effect of Zn stress on beans and herbivorous insects is largely unclear. This study aimed to investigate the resistance of broad bean plants to Zn stress and the consequent changes in their physiological and biochemical metabolism by simulating heavy metal pollution in soil. Simultaneously, the effects of aphid progeny treated with different Zn concentrations on the expression of carbohydrate and related genes were analyzed. The results showed that Zn had no effect on the germination rate of broad beans, but other effects mainly manifested as follows. (1) Chlorophyll content decreased. (2) The total soluble sugar and Zn content in stems and leaves increased with increasing Zn content. (3) The proline content first increased and then decreased with increasing Zn content. (4) The height of the seedlings indicates that low concentrations promote growth and high concentrations inhibit growth. In addition, only the first-generation fecundity decreased significantly when aphids fed on heavy metal broad beans. Continuous high Zn levels increase the trehalose content of aphid F1 and F2, while F3 decreases. These results can not only provide a theoretical basis for exploring the impact of soil heavy metal pollution on ecosystems but also preliminarily evaluate the possibility of broad beans as a means of pollution remediation.
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Claims 10
Claim · model-written summary
Zinc did not affect broad bean germination rate.
- Taxon
- broad beans
Vicia fabae0 - Treatment
- Zne0
- Outcome
- germination ratee0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn had no effect on the germination rate of broad beans”
Claim · model-written summary
Zinc reduced broad bean chlorophyll content.
- Taxon
- broad beansVicia fabae0
- Treatment
- Zne0
- Outcome
- Chlorophyll contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn had no effect on the germination rate of broad beans, but other effects mainly manifested as follows. (1) Chlorophyll content decreased.”
Claim · model-written summary
Stem and leaf soluble sugar increased with zinc content.
Not reportedTaxon
Verbatim
e0“The total soluble sugar and Zn content in stems and leaves increased with increasing Zn content.”
Claim · model-written summary
Stem and leaf zinc content increased with zinc content.
Not reportedTaxon
Verbatim
e0“The total soluble sugar and Zn content in stems and leaves increased with increasing Zn content.”
Claim · model-written summary
Proline content rose and then fell as zinc content increased.
Not reportedTaxon
Verbatim
e0“The proline content first increased and then decreased with increasing Zn content.”
Claim · model-written summary
Low zinc concentrations promoted seedling height.
Not reportedTaxonComparator
Verbatim
e0“The height of the seedlings indicates that low concentrations promote growth and high concentrations inhibit growth.”
Claim · model-written summary
High zinc concentrations inhibited seedling height.
Not reportedTaxonComparator
Verbatim
e0“The height of the seedlings indicates that low concentrations promote growth and high concentrations inhibit growth.”
Claim · model-written summary
First-generation aphid fecundity decreased after feeding on zinc-treated broad beans.
- Taxon
- broad beansVicia fabae0
- Treatment
- heavy metal broad beanse0
- Interactor
- aphidsAphidomorphae0pest
- Outcome
- first-generation fecunditye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only the first-generation fecundity decreased significantly when aphids fed on heavy metal broad beans.”
Claim · model-written summary
Continuous high zinc increased trehalose content in F1 and F2 aphids.
- Treatment
- Continuous high Zn levelse0
- Interactor
- aphide0pest
- Outcome
- trehalose content of aphid F1 and F2e0
- Direction
- increasee0
Not reportedTaxonComparator
Verbatim
e0“Continuous high Zn levels increase the trehalose content of aphid F1 and F2, while F3 decreases.”
Claim · model-written summary
Continuous high zinc decreased trehalose content in F3 aphids.
- Treatment
- Continuous high Zn levelse0
- Interactor
- aphide0pest
- Outcome
- trehalose content of aphid F1 and F2e0
- Direction
- decreasese0
Not reportedTaxonComparator
Verbatim
e0“Continuous high Zn levels increase the trehalose content of aphid F1 and F2, while F3 decreases.”
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