Abstract
We studied the effects of virus infection on dynamics of three Eupatorium makinoi populations in contrasting light environments, Gora-dani (a shaded population) and Minou 1 and Minou 2 (open-site populations). Censuses of the plants were taken for 8 yr in Gora-dani and 4 yr in Minou 1 and Minou 2. After the epidemics of virus infection, most plants were virus infected at both sites. The number of plants and the proportion of flowering individuals decreased rapidly and simultaneously in the shaded population in Gora-dani. By contrast, in the open-site populations of Minou, the proportion of flowering plants decreased first, and then the number of plants decreased gradually. Growth analysis of the plants in the Gora-dani population revealed that stem growth was significantly suppressed by infection and that flowering and survivorship of the infected plants decreased with reducing plant height. Since light availability affected plant growth and thereby flowering and survivorship, the differences in population dynamics between the two field sites could be caused by the differences in light environments. Although populations in open sites may persist for considerable periods after virus epidemics, the individual local populations of E. makinoi would eventually become extinct irrespective of light environments.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Most plants were virus infected at both sites after the virus epidemics.
- Taxon
- Eupatorium makinoi
Eupatorium makinoit0 - Interactor
- viruse1pathogen
- Outcome
- most plants were virus infectede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Eupatorium makinoi”
e1“After the epidemics of virus infection, most plants were virus infected at both sites”
Claim · model-written summary
In the shaded Gora-dani population, the number of plants and the proportion of flowering individuals decreased rapidly and simultaneously.
- Taxon
- Eupatorium makinoiEupatorium makinoit0
- Outcome
- the number of plants and the proportion of flowering individualse2
- Direction
- decreased rapidlye2
- Qualifier
- simultaneouslye2
- Setting
- the shaded population in Gora-danie2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Eupatorium makinoi”
e2“The number of plants and the proportion of flowering individuals decreased rapidly and simultaneously in the shaded population in Gora-dani”
Claim · model-written summary
In the open-site Minou populations, the proportion of flowering plants decreased first.
- Taxon
- Eupatorium makinoiEupatorium makinoit0
- Outcome
- the proportion of flowering plantse3
- Direction
- decreased firste3
- Setting
- open-site populations of Minoue3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Eupatorium makinoi”
e3“By contrast, in the open-site populations of Minou, the proportion of flowering plants decreased first, and then the number of plants decreased gradually”
Claim · model-written summary
In the open-site Minou populations, the number of plants decreased gradually after the flowering proportion.
- Taxon
- Eupatorium makinoiEupatorium makinoit0
- Outcome
- the number of plantse3
- Direction
- decreased graduallye3
- Setting
- open-site populations of Minoue3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Eupatorium makinoi”
e3“By contrast, in the open-site populations of Minou, the proportion of flowering plants decreased first, and then the number of plants decreased gradually”
Claim · model-written summary
Stem growth was significantly suppressed by virus infection.
- Taxon
- Eupatorium makinoiEupatorium makinoit0
- Treatment
- infectione4
- Outcome
- stem growthe4
- Direction
- suppressede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Eupatorium makinoi”
e4“stem growth was significantly suppressed by infection”
Claim · model-written summary
Flowering and survivorship of infected plants decreased with reducing plant height.
- Taxon
- Eupatorium makinoiEupatorium makinoit0
- Treatment
- infectede5
- Outcome
- flowering and survivorshipe5
- Direction
- decreasede5
- Qualifier
- with reducing plant heighte5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Eupatorium makinoi”
e5“flowering and survivorship of the infected plants decreased with reducing plant height”
Claim · model-written summary
Light availability affected plant growth and thereby flowering and survivorship.
- Taxon
- Eupatorium makinoiEupatorium makinoit0
- Treatment
- light availabilitye6
- Outcome
- plant growthe6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Eupatorium makinoi”
e6“light availability affected plant growth and thereby flowering and survivorship”
Claim · model-written summary
The differences in population dynamics between the two field sites could be caused by differences in light environments.
- Taxon
- Eupatorium makinoiEupatorium makinoit0
- Treatment
- differences in light environmentse7
- Outcome
- population dynamicse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Eupatorium makinoi”
e7“the differences in population dynamics between the two field sites could be caused by the differences in light environments”
Claim · model-written summary
Individual local populations of E. makinoi would eventually become extinct irrespective of light environments.
- Taxon
- E. makinoiEupatorium makinoie0
- Outcome
- become extincte0
- Qualifier
- irrespective of light environmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Eupatorium makinoi”
e0“the individual local populations of E. makinoi would eventually become extinct irrespective of light environments”
Claim · model-written summary
Populations in open sites may persist for considerable periods after virus epidemics.
- Taxon
- Eupatorium makinoiEupatorium makinoit0
- Outcome
- persist for considerable periodse0
- Setting
- open sitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Eupatorium makinoi”
e0“Although populations in open sites may persist for considerable periods after virus epidemics”
The same questions in other papers
infection · growth · Eupatorium makinoiResults agree
1 paper in the same direction as this paper
- 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.