Abstract
Gene families associated with the ethylene signal transduction pathway in ripening kiwifruit (Actinidia deliciosa [A. Chev.] C.F. Liang et A.R. Ferguson var. deliciosa cv. Hayward) were isolated from a kiwifruit expressed sequence tag (EST) database, including five ethylene receptor genes, two CTR1-like genes, and an EIN3-like gene AdEIL1. All were differentially expressed among various kiwifruit vine tissues, and none was fruit specific. During fruit development, levels of transcripts of AdERS1a, AdETR3, and the two CTR1-like genes decreased, whereas those of AdERS1b and AdETR2 peaked at 97 d after full bloom. In ripening kiwifruit, there was a diverse response of the ethylene receptor family to internal and external ethylene. AdERS1a, AdETR2, and AdETR3 expression increased at the climacteric stage and transcripts were induced by external ethylene treatment, while AdERS1b showed no response to ethylene. AdETR1 was negatively regulated by internal and external ethylene in ripening fruit. The two CTR1-like genes also had different expression patterns, with AdCTR1 increasing at the climacteric stage and AdCTR2 undergoing little change. 1-Methylcyclopropene treatment prevented the ethylene response of all components, but transient down-regulation was only found with AdETR2 and AdCTR1. Similar gene and ethylene responses were found in both fruit flesh and core tissues. The ethylene-induced down-regulation of AdETR1 suggests that it may have a role in sensing ethylene and transmitting this response to other members of the receptor family, thus activating the signal transduction pathway.
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Claims 14
Claim · model-written summary
Five receptor genes, two CTR1-like genes, and AdEIL1 were isolated.
- Taxon
- kiwifruit
Actinidia deliciosat0 - Outcome
- five ethylene receptor genes, two CTR1-like genes, and an EIN3-like gene AdEIL1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“including five ethylene receptor genes, two CTR1-like genes, and an EIN3-like gene AdEIL1.”
t0“kiwifruit”
Claim · model-written summary
The genes were differentially expressed across vine tissues and none was fruit specific.
- Taxon
- kiwifruitActinidia deliciosae0
- Outcome
- differentially expressed among various kiwifruit vine tissues, and none was fruit specifice0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All were differentially expressed among various kiwifruit vine tissues, and none was fruit specific.”
Claim · model-written summary
AdERS1a, AdETR3 and two CTR1-like transcripts decreased during fruit development.
- Taxon
- kiwifruitActinidia deliciosat0
- Organ / stage
- fruit developmente0
- Gene
- AdERS1a, AdETR3, and the two CTR1-like genese0
- Outcome
- levels of transcriptse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During fruit development, levels of transcripts of AdERS1a, AdETR3, and the two CTR1-like genes decreased”
t0“kiwifruit”
Claim · model-written summary
AdERS1b and AdETR2 transcripts peaked at 97 days after full bloom.
- Taxon
- kiwifruitActinidia deliciosat0
- Gene
- AdERS1b and AdETR2e0
- Outcome
- those of AdERS1b and AdETR2 peakede0
- Direction
- peakede0
- Value
- 97 de0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“those of AdERS1b and AdETR2 peaked at 97 d after full bloom.”
t0“kiwifruit”
Claim · model-written summary
AdERS1a, AdETR2 and AdETR3 expression increased at the climacteric stage.
- Taxon
- kiwifruitActinidia deliciosat0
- Organ / stage
- climacteric stagee0
- Gene
- AdERS1a, AdETR2, and AdETR3e0
- Outcome
- expressione0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AdERS1a, AdETR2, and AdETR3 expression increased at the climacteric stage”
t0“kiwifruit”
Claim · model-written summary
External ethylene induced AdERS1a, AdETR2 and AdETR3 transcripts.
- Taxon
- kiwifruitActinidia deliciosat0
- Treatment
- external ethylene treatmente0
- Gene
- AdERS1a, AdETR2, and AdETR3e0
- Outcome
- transcriptse0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AdERS1a, AdETR2, and AdETR3 expression increased at the climacteric stage and transcripts were induced by external ethylene treatment”
t0“kiwifruit”
Claim · model-written summary
AdERS1b did not respond to ethylene.
- Taxon
- kiwifruitActinidia deliciosat0
- Treatment
- ethylenee0
- Gene
- AdERS1be0
- Outcome
- response to ethylenee0
- Direction
- no responsee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AdERS1b showed no response to ethylene.”
t0“kiwifruit”
Claim · model-written summary
Internal and external ethylene negatively regulated AdETR1.
- Taxon
- kiwifruitActinidia deliciosat0
- Organ / stage
- ripening fruite0
- Gene
- AdETR1e0
- Compound
- internal and external ethylenee0
- Outcome
- AdETR1e0
- Direction
- negatively regulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AdETR1 was negatively regulated by internal and external ethylene in ripening fruit.”
t0“kiwifruit”
Claim · model-written summary
AdCTR1 increased at the climacteric stage.
- Taxon
- kiwifruitActinidia deliciosat0
- Organ / stage
- climacteric stagee0
- Gene
- AdCTR1e0
- Outcome
- AdCTR1e0
- Direction
- increasinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AdCTR1 increasing at the climacteric stage”
t0“kiwifruit”
Claim · model-written summary
AdCTR2 changed little.
- Taxon
- kiwifruitActinidia deliciosat0
- Gene
- AdCTR2e0
- Outcome
- AdCTR2e0
- Direction
- little changee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AdCTR2 undergoing little change.”
t0“kiwifruit”
Claim · model-written summary
1-Methylcyclopropene prevented the ethylene response of all components.
- Taxon
- kiwifruitActinidia deliciosat0
- Treatment
- 1-Methylcyclopropene treatmente0
- Outcome
- ethylene response of all componentse0
- Direction
- preventede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-Methylcyclopropene treatment prevented the ethylene response of all components”
t0“kiwifruit”
Claim · model-written summary
Only AdETR2 and AdCTR1 underwent transient down-regulation.
- Taxon
- kiwifruitActinidia deliciosat0
- Gene
- AdETR2 and AdCTR1e0
- Outcome
- transient down-regulatione0
- Direction
- down-regulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“transient down-regulation was only found with AdETR2 and AdCTR1.”
t0“kiwifruit”
Claim · model-written summary
Gene and ethylene responses were similar in flesh and core.
- Taxon
- kiwifruitActinidia deliciosat0
- Organ / stage
- fruit flesh and core tissuese0
- Outcome
- Similar gene and ethylene responsese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similar gene and ethylene responses were found in both fruit flesh and core tissues.”
t0“kiwifruit”
Claim · model-written summary
AdETR1 may sense ethylene and transmit the signal to other receptors.
- Taxon
- kiwifruitActinidia deliciosat0
- Gene
- AdETR1e0
- Outcome
- sensing ethylene and transmitting this response to other members of the receptor familye0
- Qualifier
- thus activating the signal transduction pathwaye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ethylene-induced down-regulation of AdETR1 suggests that it may have a role in sensing ethylene and transmitting this response to other members of the receptor family, thus activating the signal transduction pathway.”
t0“kiwifruit”
The same questions in other papers
ethene · physiology: hormones · Actinidia deliciosa (kiwifruit)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
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.