Abstract
Stem and root rot symptoms were noticed in two greenhouse farms on tomatoes planted in the 3rd decade of June, 2013. Diseased plants exposed suppressed growth and top wilting due to drastic decrease of water and poor transport of mineral salt. From diseased stem and root parts Phytophthora nicotianae var. nicotianae was isolated. The same species was also detected in cubs and stonewool mats. In laboratory experiments isolates of P. nicotianae var. nicotianae caused rotting of stem parts, leaf petioles, leaf blades and fruits regardless of tested cultivar. Necrosis spread even more than 8 mm per 24 hrs. Colonisation of tomato stem parts was observed at temperature range from 10 to 32.5°C as the optimum. In the greenhouse trials P. nicotianae var. nicotianae added to peat with infested stonewool caused wilting of 3-week-old tomato cultivar Admiro seedlings already after 3-day-growth and 5 days later most of plants wilted and died. The pathogen colonized stem base of seedlings on the length up to 30 mm. W 2 gospodarstwach szklarniowych na pomidorach sadzonych w 3 dekadzie czerwca 2013 roku stwierdzono objawy zgnilizny podstawy pędów oraz korzeni. W następstwie drastycznego ograniczenia przewodzenia wody i soli mineralnych dochodziło do zahamowania wzrostu pomidorów oraz więdnięcia ich wierzchołków. Z porażonych tkanek podstawy pędów oraz korzeni izolowano głównie Phytophthora nicotianae var. nicotianae. Gatunek ten stwierdzono również w kostkach oraz matach z wełny mineralnej. W doświadczeniach laboratoryjnych izolaty P. nicotianae var. nicotianae powodowały zgniliznę części łodyg, ogonków i blaszek liściowych oraz owoców, niezależnie od odmiany. Nekroza rozwijała się nawet ponad 8 mm na dobę. Kolonizację części łodyg pomidora stwierdzono w zakresie temperatur od 10 do 32,5°C jako optimum. W doświadczeniach szklarniowych gatunek P. nicotianae var. nicotianae wprowadzony do substratu torfowego, powodował więdnięcie 3-tygodniowych siewek pomidorów odmiany Admiro już po 3 dniach uprawy, a po 8 dniach niemal wszystkie rośliny zwiędły. Patogen kolonizował tkanki podstawy pędów na długości do 30 mm.
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Claims 8
Claim · model-written summary
Stem and root rot was observed in greenhouse tomatoes.
- Taxon
- tomatoes
Solanum lycopersicume0 - Organ / stage
- Stem and roote0
- Outcome
- rot symptomse0
- Setting
- greenhouse farmse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stem and root rot symptoms were noticed in two greenhouse farms on tomatoes planted in the 3rd decade of June, 2013.”
Claim · model-written summary
Diseased tomato plants showed suppressed growth and top wilting.
- Outcome
- suppressed growth and top wiltinge0
Not reportedTaxon
Verbatim
e0“Diseased plants exposed suppressed growth and top wilting”
Claim · model-written summary
Phytophthora nicotianae var. nicotianae was isolated from diseased tomato stems and roots and detected in cultivation materials.
- Organ / stage
- stem and root partse0
- Interactor
- Phytophthora nicotianae var. nicotianae
Phytophthora nicotianaee0pathogen - Outcome
- isolatede0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“From diseased stem and root parts Phytophthora nicotianae var. nicotianae was isolated. The same species was also detected in cubs and stonewool mats.”
Claim · model-written summary
Phytophthora isolates rotted tomato stems, petioles, leaves, and fruits regardless of cultivar.
- Treatment
- isolates of P. nicotianae var. nicotianaee0
- Interactor
- P. nicotianae var. nicotianaePhytophthora nicotianaee0pathogen
- Outcome
- rotting of stem parts, leaf petioles, leaf blades and fruitse0
- Direction
- rottinge0
Not reportedTaxonComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In laboratory experiments isolates of P. nicotianae var. nicotianae caused rotting of stem parts, leaf petioles, leaf blades and fruits regardless of tested cultivar.”
Claim · model-written summary
Tomato necrosis spread more than 8 mm per 24 hours.
Not reportedTaxon
Verbatim
e0“Necrosis spread even more than 8 mm per 24 hrs.”
Claim · model-written summary
Phytophthora colonized tomato stem tissue across 10 to 32.5°C.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- stem partse0
- Outcome
- Colonisatione0
- Value
- 10 to 32.5°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Colonisation of tomato stem parts was observed at temperature range from 10 to 32.5°C as the optimum.”
Claim · model-written summary
Inoculated Admiro tomato seedlings wilted after three days and most died after another five days.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- Admiroe0
- Treatment
- P. nicotianae var. nicotianae added to peat with infested stonewoole0
- Interactor
- P. nicotianae var. nicotianaePhytophthora nicotianaee0pathogen
- Outcome
- wiltinge0
- Direction
- wiltede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. nicotianae var. nicotianae added to peat with infested stonewool caused wilting of 3-week-old tomato cultivar Admiro seedlings already after 3-day-growth and 5 days later most of plants wilted and died.”
Claim · model-written summary
The pathogen colonized up to 30 mm of tomato seedling stem bases.
Not reportedTaxon
Verbatim
e0“The pathogen colonized stem base of seedlings on the length up to 30 mm.”
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