Abstract
Strigahermonthica (Del.) Benth is a parasitic weed that devastates cereals in Sub-Saharan Africa. Several control measures have been proposed for the parasite, of these, host plant resistance is considered the most cost-effective for poor farmers. Some tolerant/resistant lines have been developed and these lines display tolerance/resistance mechanisms to the parasite. A series of studies was done to investigate some of the mechanisms through which a resistant (TZISTR1108) and a susceptible (5057) maize line responds to S. hermonthica infestation, as well as the effects of parasitism on these lines. In this study, TZISTR1108 stimulated the germination and attachment of fewer S. hermonthica plants than 5057, both in the laboratory and on the field. In TZISTR1108, the growth of the S. hermonthica plants, that successfully attached, was slowed. When compared to the un-infested plants, the infested resistant plants showed fewer effects of parasitism than the infested susceptible plants. The infested TZISTR1108 plants were more vigorous, taller and resembled their un-infected counterparts. There were substantial reductions in the stomatal conductance and nitrogen content of the 5057 upon infestation. The resistant inbred line showed multiple mechanisms of resistance to S. hermonthica infestation. It thrives better than the susceptible line by reducing the attachment of S. hermonthica and it delays the parasite’s development.
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Claims 7
Claim · model-written summary
The resistant line TZISTR1108 stimulated germination and attachment of fewer S. hermonthica plants than susceptible line 5057, in the laboratory and on the field.
- Material
- TZISTR1108e2
- Treatment
- S. hermonthica infestatione1
- Interactor
- S. hermonthica
Striga hermonthicae2parasite - Outcome
- germination and attachmente2
- Direction
- fewere2
- Comparator
- 5057e2
- Setting
- the laboratory and on the fielde2
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize Lines”
e1“A series of studies was done to investigate some of the mechanisms through which a resistant (TZISTR1108) and a susceptible (5057) maize line responds to S. hermonthica infestation”
e2“TZISTR1108 stimulated the germination and attachment of fewer S. hermonthica plants than 5057, both in the laboratory and on the field”
Claim · model-written summary
Growth of S. hermonthica plants that attached to TZISTR1108 was slowed.
- Material
- TZISTR1108e3
- Interactor
- S. hermonthicaStriga hermonthicae3parasite
- Outcome
- growth of the S. hermonthica plantse3
- Direction
- slowede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize Lines”
e3“In TZISTR1108, the growth of the S. hermonthica plants, that successfully attached, was slowed”
Claim · model-written summary
Infested resistant maize showed fewer effects of parasitism than infested susceptible maize.
- Treatment
- infestede4
- Outcome
- effects of parasitisme4
- Direction
- fewere4
- Comparator
- infested susceptible plantse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize Lines”
e4“When compared to the un-infested plants, the infested resistant plants showed fewer effects of parasitism than the infested susceptible plants”
Claim · model-written summary
Infested TZISTR1108 plants were more vigorous and taller.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize Lines”
e5“The infested TZISTR1108 plants were more vigorous, taller and resembled their un-infected counterparts”
Claim · model-written summary
Infested TZISTR1108 plants resembled their un-infected counterparts.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize Lines”
e5“The infested TZISTR1108 plants were more vigorous, taller and resembled their un-infected counterparts”
Claim · model-written summary
Infestation substantially reduced stomatal conductance and nitrogen content of susceptible line 5057.
- Material
- 5057e6
- Treatment
- infestatione6
- Outcome
- stomatal conductance and nitrogen contente6
- Direction
- reductionse6
- Qualifier
- substantiale6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize Lines”
e6“There were substantial reductions in the stomatal conductance and nitrogen content of the 5057 upon infestation”
Claim · model-written summary
The resistant line delays the development of S. hermonthica parasites.
- Interactor
- S. hermonthicaStriga hermonthicae7parasite
- Outcome
- parasite’s developmente7
- Direction
- delayse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize Lines”
e7“by reducing the attachment of S. hermonthica and it delays the parasite’s development”
The same questions in other papers
infection · physiology: gas exchange · Zea mays (maize)Results agree
2 papers in the same direction as this paper
- negative
- 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.