Abstract
ABSTRACT Water stress can be alleviated in plants inoculated with arbuscular mycorrhizal fungi compared to that experienced by those without mycorrhizae. The objective of this study was to evaluate the growth of coffee plants colonized by arbuscular mycorrhizal fungi under different soil moisture conditions. Seeds of the coffee cultivar Catuaí Vermelho IAC 99 and three fungal inoculants (Rhizophagus clarus, Claroideoglomus etunicatum and Dentiscutata heterogama) were used in this study. The soil moisture contents tested were 40, 60, 80, and 100% of field capacity. Seedlings in the matchstick stage were inoculated with mycorrhizae, and then later planted in plastic pots when they developed four to five pairs of definitive leaves. Both the extent of mycorrhizal colonization and increases in leaf area were related to soil moisture content in a quadratic manner for plants inoculated with all three mycorhizzal fungi (R. clarus, C. etunicatum, and D. heterogama), as well as for non-inoculated ones. The highest value of colonization of coffee by mycorrhizae was 39%, which occurred in association with R. clarus at 71% of field capacity. The leaf areas of plants inoculated with fungi increased more than those of non-inoculated plants, regardless of the type of inoculum used. Plants inoculated with D. heterogama at 100% field capacity produced 21% more root dry mass than non-inoculated plants did. Inoculation with arbuscular mycorrhizal fungi and higher soil moisture increased the growth of coffee seedlings. The plants inoculated with R. clarus, C. etunicatum, and D. heterogama were tolerant to moderate water deficits (i.e. lower soil water contents). Mycorrhizal colonization was highest for plants in soils with moisture levels close to 75% of field capacity.
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Claims 7
Claim · model-written summary
Colonization of coffee by mycorrhizae was highest at 39% in association with R. clarus at 71% of field capacity.
- Treatment
- 71% of field capacitye1
- Interactor
- R. clarusRhizophagus claruse1symbiont
- Outcome
- colonizatione1
- Direction
- higheste1
- Value
- 39%e1
CoffeaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The highest value of colonization of coffee by mycorrhizae was 39%, which occurred in association with R. clarus at 71% of field capacity”
Claim · model-written summary
Leaf area of coffee plants inoculated with fungi increased more than that of non-inoculated plants, regardless of inoculum type.
- Treatment
- inoculated with fungie2
- Outcome
- leaf arease2
- Direction
- increasede2
- Comparator
- non-inoculated plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“coffee plants”
e2“The leaf areas of plants inoculated with fungi increased more than those of non-inoculated plants, regardless of the type of inoculum used”
Claim · model-written summary
Coffee plants inoculated with D. heterogama at 100% field capacity produced 21% more root dry mass than non-inoculated plants.
- Treatment
- inoculated with D. heterogama at 100% field capacitye3
- Interactor
- D. heterogamaDentiscutata heterogamae3symbiont
- Outcome
- root dry masse3
- Direction
- moree3
- Value
- 21%e3
- Comparator
- non-inoculated plantse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“coffee plants”
e3“Plants inoculated with D. heterogama at 100% field capacity produced 21% more root dry mass than non-inoculated plants did”
Claim · model-written summary
Mycorrhizal colonization of coffee was highest in soils with moisture close to 75% of field capacity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“coffee plants”
e4“Mycorrhizal colonization was highest for plants in soils with moisture levels close to 75% of field capacity”
Claim · model-written summary
Coffee plants inoculated with R. clarus and C. etunicatum were tolerant to moderate water deficits.
- Interactor
- R. clarusRhizophagus claruse5symbiont
- Second interactor
- C. etunicatum
Entrophospora etunicatae5symbiont - Outcome
- tolerant to moderate water deficitse5
- Qualifier
- D. heterogamae5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“coffee plants”
e5“The plants inoculated with R. clarus, C. etunicatum, and D. heterogama were tolerant to moderate water deficits (i.e. lower soil water contents)”
Claim · model-written summary
Inoculation with arbuscular mycorrhizal fungi and higher soil moisture increased the growth of coffee seedlings.
- Treatment
- Inoculation with arbuscular mycorrhizal fungi and higher soil moisturee6
- Outcome
- growthe6
- Direction
- increasede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“coffee plants”
e6“Inoculation with arbuscular mycorrhizal fungi and higher soil moisture increased the growth of coffee seedlings”
Claim · model-written summary
Mycorrhizal colonization and leaf area were related to soil moisture content in a quadratic manner.
- Treatment
- soil moisture contente7
- Outcome
- extent of mycorrhizal colonizatione7
- Qualifier
- in a quadratic mannere7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“coffee plants”
e7“Both the extent of mycorrhizal colonization and increases in leaf area were related to soil moisture content in a quadratic manner”
The same questions in other papers
inoculation · growth · Coffea (coffee)Positive and negative results
19 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
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