Abstract
KEY MESSAGE: Alien introgressions that were captured in the genome of diploid plants segregating from progenies of monosomic alien addition lines of S. lycopersicoides confer novel phenotypes with commercial and agronomic value in tomato breeding. Solanum lycopersicoides is a wild relative of tomato with a natural adaptation to a wide array of biotic and abiotic challenges. In this study, we identified and characterized diploid plants segregating from the progenies of monosomic alien addition lines (MAALs) of S. lycopersicoides to establish their potential as donors in breeding for target trait improvement in tomato. Molecular genotyping identified 28 of 38 MAAL progenies having the complete chromosome complement of the cultivated tomato parent and limited chromosome introgressions from the wild S. lycopersicoides parent. Analysis of SSR and indel marker profiles identified 34 unique alien introgressions in the 28 MAAL-derived introgression lines (MDILs) in the genetic background of tomato. Conserved patterns of alien introgressions were detected among sibs of MDILs 2, 3, 4 and 8. Across MDILs, a degree of preferential transmission of specific chromosome segments was also observed. Morphologically, the MDILs closely resembled the cultivated tomato more than S. lycopersicoides. The appearance of novel phenotypes in the MDILs that are lacking in the cultivated parent or the source MAALs indicates the capture of novel genetic variation by the diploid introgression lines that can add commercial and agronomic value to tomato. In particular, screening of representative MDILs for drought tolerance at the vegetative stage identified MDIL 2 and MDIL 11III as drought tolerant based on visual scoring. A regulated increase in stomatal conductance of MDIL 2 under drought stress indicates better water use efficiency that allowed it to survive for 7 days under 0% moisture level.
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Claims 10
Claim · model-written summary
Molecular genotyping identified 28 of 38 MAAL progenies with the complete chromosome complement of the cultivated tomato parent.
- Taxon
- tomato
Solanum lycopersicume1 - Material
- MAAL progeniese1
- Outcome
- complete chromosome complemente1
- Value
- 28 of 38e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Molecular genotyping identified 28 of 38 MAAL progenies having the complete chromosome complement of the cultivated tomato parent and limited chromosome introgressions from the wild S. lycopersicoides parent”
Claim · model-written summary
SSR and indel marker analysis identified 34 unique alien introgressions in the 28 MAAL-derived introgression lines.
- Taxon
- tomatoSolanum lycopersicume2
- Material
- MAAL-derived introgression lines (MDILs)e2
- Outcome
- unique alien introgressionse2
- Value
- 34e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Analysis of SSR and indel marker profiles identified 34 unique alien introgressions in the 28 MAAL-derived introgression lines (MDILs) in the genetic background of tomato”
Claim · model-written summary
Conserved patterns of alien introgressions were detected among sibs of MDILs 2, 3, 4 and 8.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- sibs of MDILs 2, 3, 4 and 8e3
- Outcome
- Conserved patterns of alien introgressionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in tomato breeding”
e3“Conserved patterns of alien introgressions were detected among sibs of MDILs 2, 3, 4 and 8”
Claim · model-written summary
A degree of preferential transmission of specific chromosome segments was observed across MDILs.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- MDILse4
- Outcome
- preferential transmission of specific chromosome segmentse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in tomato breeding”
e4“Across MDILs, a degree of preferential transmission of specific chromosome segments was also observed”
Claim · model-written summary
MDILs closely resembled the cultivated tomato more than S. lycopersicoides in morphology.
- Taxon
- tomatoSolanum lycopersicume5
- Material
- MDILse5
- Outcome
- closely resembled the cultivated tomatoe5
- Comparator
- S. lycopersicoidese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Morphologically, the MDILs closely resembled the cultivated tomato more than S. lycopersicoides”
Claim · model-written summary
Novel phenotypes appeared in MDILs that are lacking in the cultivated parent or the source MAALs.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- MDILse6
- Outcome
- novel phenotypese6
- Comparator
- cultivated parent or the source MAALse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in tomato breeding”
e6“The appearance of novel phenotypes in the MDILs that are lacking in the cultivated parent or the source MAALs indicates the capture of novel genetic variation by the diploid introgression lines”
Claim · model-written summary
MDIL 2 and MDIL 11III were identified as drought tolerant at the vegetative stage by visual scoring.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- MDIL 2 and MDIL 11IIIe7
- Organ / stage
- vegetative stagee7
- Outcome
- drought tolerante7
- Qualifier
- based on visual scoringe7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in tomato breeding”
e7“screening of representative MDILs for drought tolerance at the vegetative stage identified MDIL 2 and MDIL 11III as drought tolerant based on visual scoring”
Claim · model-written summary
Stomatal conductance of MDIL 2 increased under drought stress.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- MDIL 2e1
- Treatment
- drought stresse1
- Outcome
- stomatal conductancee1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in tomato breeding”
e1“A regulated increase in stomatal conductance of MDIL 2 under drought stress indicates better water use efficiency”
Claim · model-written summary
MDIL 2 survived for 7 days under a 0% moisture level.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- MDIL 2e1
- Treatment
- 0% moisture levele2
- Outcome
- survivee2
- Value
- 7 dayse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in tomato breeding”
e1“A regulated increase in stomatal conductance of MDIL 2 under drought stress indicates better water use efficiency”
e2“that allowed it to survive for 7 days under 0% moisture level”
Claim · model-written summary
The regulated increase in stomatal conductance of MDIL 2 indicates better water use efficiency, which allowed its survival under drought.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- MDIL 2e1
- Outcome
- water use efficiencye1
- Qualifier
- regulated increase in stomatal conductancee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in tomato breeding”
e1“A regulated increase in stomatal conductance of MDIL 2 under drought stress indicates better water use efficiency”
The same questions in other papers
drought · physiology: gas exchange · Solanum lycopersicum (tomato)Results differ
2 papers in the same direction as this paper · 23 in the opposite direction
- negative
- negative
- negative
22 papers more in this group
See all 26 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.