Abstract
Abstract. Suminar E, Budiarto R, Nuraini A, Mubarok S, Ezura H. 2022. Morpho-physiologicalresponsesof iaa9 tomato mutants to different levels of PEG simulated drought stress. Biodiversitas 23: 3115-3126.This study aimed to analyze the morphological and physiological responses of iaa9 mutants and its WT-MT to different levels of drought stress in in vitro growing medium. This study applied a completely randomized design with two factors, i.e., tomato genotypes and polyethylene glycol (PEG) - induced drought stress levels. The factor of varieties consisted of three levels, i.e., WT-MT as control (G1), iaa9-3(G2), and iaa9-5 (G3). The factor of PEG-induced drought stress also consisted of four levels, i.e., 0% PEG as control (PEG0), 5% PEG (PEG5), 10% PEG (PEG10), and 15% PEG (PEG15). The results observed 12 weeks after culture showed the variations of the morpho-physiological response of WT-MT and mutant genotypes to PEG-induced in vitro drought stress. The WT-MT showed a higher reduction in plantlet height, root number, and root length than mutants under severe drought conditions. The plantlet fresh and dry weight of iaa9-3and iaa9-5were higher than its WT-MT under no drought conditions. The total chlorophyll content of WT-MT was lower than iaa9-5due to the significant gain of chlorophyll-b on that mutant rather than its WT-MT. However, the analysis of principal components and correlation revealed the reduction of morphological size and leaf pigment content in response to drought stress, irrespective of genotype factor. These results suggest that in vitro selection techniques using PEG is useful for the initial screening of drought-tolerant tomato.
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Claims 6
Claim · model-written summary
Under severe drought, wild-type tomato had a greater reduction in plantlet height, root number, and root length than the mutants.
- Taxon
- tomato
Solanum lycopersicumt0 - Material
- WT-MTe0
- Treatment
- severe drought conditionse0
- Outcome
- plantlet height, root number, and root lengthe0
- Direction
- higher reductione0
- Comparator
- mutantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The WT-MT showed a higher reduction in plantlet height, root number, and root length than mutants under severe drought conditions”
t0“tomato mutants”
Claim · model-written summary
Without drought, iaa9-3 and iaa9-5 had higher plantlet fresh and dry weight than WT-MT.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- iaa9-3and iaa9-5e0
- Outcome
- plantlet fresh and dry weighte0
- Direction
- highere0
- Qualifier
- under no drought conditionse0
- Comparator
- WT-MTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plantlet fresh and dry weight of iaa9-3and iaa9-5were higher than its WT-MT under no drought conditions”
t0“tomato mutants”
Claim · model-written summary
WT-MT had lower total chlorophyll content than iaa9-5.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- WT-MTe0
- Outcome
- total chlorophyll contente0
- Direction
- lowere0
- Comparator
- iaa9-5e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total chlorophyll content of WT-MT was lower than iaa9-5due to the significant gain of chlorophyll-b on that mutant rather than its WT-MT”
t0“tomato mutants”
Claim · model-written summary
The iaa9-5 mutant had a significant gain of chlorophyll-b relative to WT-MT.
Not reportedTaxon
Verbatim
e0“significant gain of chlorophyll-b on that mutant rather than its WT-MT”
e1“iaa9-5due to the significant gain”
Claim · model-written summary
Drought stress reduced tomato morphological size and leaf pigment content regardless of genotype.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- drought stresse0
- Outcome
- morphological size and leaf pigment contente0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduction of morphological size and leaf pigment content in response to drought stress, irrespective of genotype factor”
t0“tomato mutants”
Claim · model-written summary
The authors suggest PEG-based in vitro selection for initial screening of drought-tolerant tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- PEGe0
- Outcome
- initial screening of drought-tolerant tomatoe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in vitro selection techniques using PEG is useful for the initial screening of drought-tolerant tomato”
The same questions in other papers
drought · physiology: pigments · Solanum lycopersicum (tomato)Results differ
28 papers in the same direction as this paper · 6 in the opposite direction
- negative
- positive
- positive
31 papers more in this group
See all 35 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.