Abstract
Seedlings of Carica papaya L. `Waimanalo' (papaya) were transplanted into 27-L containers filled with nonsterile composted landscape yard trimmings passed through a 1.3-cm screen. At transplanting, papaya plants were inoculated with either one of three different AMF communities or were not inoculated as control plants. Two of the AMF communities were from Arizona citrus orchards, and one AMF community was from an undisturbed western Chihuahuan Desert soil. After transplanting, papaya plants were grown for 4 months under well-watered conditions in a temperature-controlled (32 °C day/24 °C night) glasshouse (45% light exclusion). Control plants remained non-mycorrhizal. Total colonization of papaya roots by AMF communities ranged from 56% to 94%. Depending on mycorrhizal treatment, AMF arbuscules and internal hyphae were present in 30% to 60% and 20% to 24% of roots, respectively. Noticeably absent in papaya roots were AMF vesicles. Papaya height, trunk diameter, and leaf phosphorus concentration were similar for inoculated and control plants. Compared with control plants, papayas inoculated with AMF communities had about 20% less shoot dry weight and about 50% less root dry weight. Under nonlimiting conditions in an organic substrate, AMF communities did not stimulate papaya growth but rather appeared to function as a carbon sink.
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Claims 9
Claim · model-written summary
Uninoculated control papaya remained non-mycorrhizal.
- Taxon
- Carica papaya
_-_DPLA_-_55200ec009622d7d42349f3583df310e.jpg?width=60)
Carica papayat0 - Outcome
- non-mycorrhizale0
- Comparator
- Control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_-_DPLA_-_55200ec009622d7d42349f3583df310e.jpg?width=500)
Verbatim
e0“Control plants remained non-mycorrhizal.”
t0“Carica papaya”
Claim · model-written summary
AMF root colonization ranged from 56% to 94%.
- Taxon
- papayaCarica papayae0
- Interactor
- AMF communitiese0symbiont
- Outcome
- Total colonization of papaya rootse0
- Value
- 56% to 94%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total colonization of papaya roots by AMF communities ranged from 56% to 94%.”
Claim · model-written summary
AMF arbuscules occurred in 30% to 60% of papaya roots depending on treatment.
- Taxon
- Carica papayaCarica papayat0
- Organ / stage
- rootse0
- Interactor
- AMFe0symbiont
- Outcome
- AMF arbusculese0
- Value
- 30% to 60%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Depending on mycorrhizal treatment, AMF arbuscules and internal hyphae were present in 30% to 60% and 20% to 24% of roots, respectively.”
t0“Carica papaya”
Claim · model-written summary
AMF internal hyphae occurred in 20% to 24% of roots depending on treatment.
- Taxon
- Carica papayaCarica papayat0
- Organ / stage
- rootse0
- Interactor
- AMFe0symbiont
- Outcome
- internal hyphaee0
- Value
- 20% to 24%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Depending on mycorrhizal treatment, AMF arbuscules and internal hyphae were present in 30% to 60% and 20% to 24% of roots, respectively.”
t0“Carica papaya”
Claim · model-written summary
AMF vesicles were absent in papaya roots.
- Taxon
- papayaCarica papayae0
- Organ / stage
- rootse0
- Interactor
- AMFe0symbiont
- Outcome
- absente0
- Qualifier
- AMF vesiclese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Noticeably absent in papaya roots were AMF vesicles.”
Claim · model-written summary
Inoculated and control papaya had similar height, trunk diameter and leaf phosphorus concentration.
- Taxon
- PapayaCarica papayae0
- Treatment
- inoculated with AMF communitiese1
- Interactor
- AMF communitiese1symbiont
- Outcome
- height, trunk diameter, and leaf phosphorus concentratione0
- Direction
- similare0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Papaya height, trunk diameter, and leaf phosphorus concentration were similar for inoculated and control plants.”
e1“papayas inoculated with AMF communities”
Claim · model-written summary
AMF-inoculated papaya had about 20% less shoot dry weight than controls.
- Taxon
- papayasCarica papayae0
- Treatment
- inoculated with AMF communitiese0
- Interactor
- AMF communitiese0symbiont
- Outcome
- shoot dry weighte0
- Direction
- lesse0
- Value
- about 20%e0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with control plants, papayas inoculated with AMF communities had about 20% less shoot dry weight and about 50% less root dry weight.”
Claim · model-written summary
AMF-inoculated papaya had about 50% less root dry weight than controls.
- Taxon
- papayasCarica papayae0
- Treatment
- inoculated with AMF communitiese0
- Interactor
- AMF communitiese0symbiont
- Outcome
- root dry weighte0
- Direction
- lesse0
- Value
- about 50%e0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with control plants, papayas inoculated with AMF communities had about 20% less shoot dry weight and about 50% less root dry weight.”
Claim · model-written summary
Under nonlimiting conditions in organic substrate, AMF appeared to function as a carbon sink rather than stimulate papaya growth.
- Taxon
- papayaCarica papayae0
- Interactor
- AMF communitiese0symbiont
- Outcome
- papaya growthe0
- Qualifier
- appeared to function as a carbon sinke0
- Setting
- organic substratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under nonlimiting conditions in an organic substrate, AMF communities did not stimulate papaya growth but rather appeared to function as a carbon sink.”
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See all 17 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.