Search claims · PlantClaims

Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

The authors interpreted narrower guard cells and higher stomatal density as an oak protective mechanism.

Taxon: Q. roburQuercus robure0
Outcome: protective mechanisme0
Qualifier: decrease of stomata guard cell width coupled with the increase of stomatal densitye0

Verbatim

e0
“In case of leaf stomatal traits, the decrease of stomata guard cell width coupled with the increase of stomatal density was observed as the protective mechanism of Q. robur against the stressor.”
✓ located verbatim in the source · abstract, characters 948–1142

Title

The influence of powdery mildew on chlorophyll a fluorescence and stomatal characteristics of pedunculate oak (Quercus robur L.)

Erna Vastag; Saša Orlović; Mirjana Bojović; et al. Topola 2022. doi:10.5937/topola2209031v

Other claims from this paper (6)

Method / resource All observed chlorophyll fluorescence transient parameters effectively detected severe biotic stress.
Intervention effect Powdery mildew considerably influenced slow fluorescence kinetics parameters.
Observation Non-photochemical quenching coefficient and Stem-Volmer quenching parameters responded fastest.
Observation Oak stomatal guard cell width decreased under stress.
Observation Oak stomatal density increased under stress.
Intervention effect Powdery mildew adversely affected oak seedling photosynthesis, worsening over time and with infection severity.

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Excess plant litter decreased green shoot density and mass in protected meadow communities.

Taxon: meadow communitiese0
Outcome: density and mass of green shootse1
Direction: decreasee1
Qualifier: excessive accumulation of plant littere0

Verbatim

e0
“meadow communities, along with weather conditions, the considerable impact on the condition of the herbage is significantly affected by the excessive accumulation of plant litter”
✓ located verbatim in the source · abstract, characters 725–903

e1
“This leads to decrease in the density and mass of green shoots”
✓ located verbatim in the source · abstract, characters 969–1031

Title

Dynamics of aboveground phytomass in the communities of the Ob River forest-steppe and Northern Kulunda during protective regime

G. K. Zvereva Проблемы ботаники Южной Сибири и Монголии 2022. doi:10.14258/pbssm.2022017

Other claims from this paper (5)

Mechanismauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors suggest reduced water-channel activity or density explains low Lpr.

Taxon: wheatTriticum aestivume2
Outcome: lowered root Lpre1
Qualifier: decrease in either the activity of water channels or their density in the PMe1

Verbatim

e1
“The lack of Hg-sensitivity in roots and PMs from N-deprived roots provides circumstantial evidence that lowered root Lpr may be due to a decrease in either the activity of water channels or their density in the PM.”
✓ located verbatim in the source · abstract, characters 1633–1847

e2
“wheat roots”
✓ located verbatim in the source · abstract, characters 855–866

Title

Root hydraulic conductance: diurnal aquaporin expression and the effects of nutrient stress

D. T. Clarkson Journal of Experimental Botany 2000. doi:10.1093/jexbot/51.342.61

Other claims from this paper (12)

Observation N, P and S deficiencies reduced root hydraulic conductivity.
Intervention effect Lpr decreased early during nitrate, phosphate and sulfate deprivation.
Intervention effect Resupplying deficient nutrient reversed Lpr reduction within 4-24 h.
Observation Lotus japonicus root Lpr showed diurnal fluctuations.
Intervention effect Brief HgCl2 treatments affected root Lpr in nutrient-sufficient wheat, reversibly.
Intervention effect Hg did not affect low Lpr in N- or P-deprived wheat roots.
Association PM vesicles from nitrate-deprived wheat roots had lower osmotic permeability.
Intervention effect Osmotic permeability of vesicles from N-deprived roots was insensitive to Hg.
Observation Lotus japonicus roots contained transcripts homologous to Arabidopsis PIP1 and PIP2 aquaporins.
Observation Lotus root aquaporin homologue mRNAs showed a diurnal abundance cycle.
Association Aquaporin mRNA peaks and troughs preceded Lpr fluctuations by 2-4 h.
Mechanism The authors conclude roots monitor incoming nutrients and anticipate metabolic disturbances.

Mechanismobservedoriginal resultnegativemeasured

Claim · model-written summary

More livestock reduced visitation through lower insect abundance.

Taxon: plante0
Treatment: increase in livestock densitye1
Outcome: visitation frequencye1
Direction: reducede1
Qualifier: decrease in insect abundancee1

Verbatim

e0
“native plant species of the region”
✓ located verbatim in the source · abstract, characters 718–752

e1
“An increase in livestock density reduced visitation frequency through a decrease in insect abundance”
✓ located verbatim in the source · abstract, characters 1660–1760

Title

Indirect effects of grazing intensity on pollinators and floral visitation

MARIANA TADEY Ecological Entomology 2015. doi:10.1111/een.12209

Other claims from this paper (7)

Association Intermediate livestock density had the highest insect richness.
Association Intermediate livestock density had the highest insect abundance.
Association Livestock density related quadratically and negatively to insect richness.
Association Flower density decreased as livestock density increased.
Observation Five plant species shared pollinators but had distinct assemblages.
Association Livestock was not directly associated with pollinator visitation frequency.
Mechanism More livestock increased visitation rate through lower flower abundance.

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Non-stomatal factors were the main reason for the decrease of Pn in ZD958.

Taxon: maizeZea mayst0
Outcome: decrease of Pne4
Qualifier: non-stomatal factorse4

Verbatim

t0
“Low-light Stress for Maize Hybrids”
✓ located verbatim in the source · title, characters 42–76

e4
“non-stomatal factors was the main reasons for the decrease of Pn”
✓ located verbatim in the source · abstract, characters 865–929

Title

Responses of Photosynthesis Characters to Low-light Stress for Maize Hybrids with Different Density Tolerances

LI Dong-me Yumi kexue 2013

Other claims from this paper (6)

Association The net photosynthetic rate of ZD958 was higher than that of DD90 under full sunlight.
Intervention effect Low light stress decreased apparent quantum yield and maximum photosynthetic rate of ZD958.
Intervention effect Low light stress decreased light saturation point and light compensation point of ZD958.
Intervention effect Low light stress decreased apparent quantum yield of DD90.
Intervention effect Under low light stress, Pmax, LSP and LCP of DD90 were higher than under full sunlight.
Mechanism The improvement of photosynthetic capacity in DD90 was through reducing heat dissipation of the photosynthetic process.

Mechanismhypothesisoriginal resultnegativemeasured

Claim · model-written summary

Summer drought and competition were proposed as causes of declining Cistus seedling density.

Taxon: C. salviifoliusCistus salviifoliuse0
Outcome: decrease in density of seedlingse0
Qualifier: mortality of young seedlings due to summer drought and competition among seedlings and with P. brutia treese0

Verbatim

e0
“The major factors responsible for the decrease in density of seedlings of C. salviifolius and C. creticus are likely to be the mortality of young seedlings due to summer drought and competition among seedlings and with P. brutia trees”
✓ located verbatim in the source · abstract, characters 1241–1475

Title

Post-Fire Dynamics of Cistus spp. in a Pinus brutia Forest

Çağatay Tavşanoğlu; Behzat Gürkan DergiPark (Istanbul University) 2005

Other claims from this paper (11)

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Low upper ridge nematode density was suggested to explain lower sweet potato damage under continuous ridge use.

Taxon: sweet potatoIpomoea batatase0
Interactor: root-knot nematodeMeloidogynet0pest
Outcome: decrease in damage to sweet potatoe0
Qualifier: Low density in the upper area of the ridgee0

Verbatim

e0
“Low density in the upper area of the ridge is suggested as one of the reasons for the decrease in damage to sweet potato in the CRU system.”
✓ located verbatim in the source · abstract, characters 614–753

t0
“root-knot nematode”
✓ located verbatim in the source · title, characters 71–89

Title

Influences of a radish and sweet potato continuous ridge use system on root-knot nematode damage to sweet potato

Takayuki Suzuki; Hiroshi Niimi; Kenta Uesugi; et al. Nematological Research (Japanese Journal of Nematology) 2014. doi:10.3725/jjn.44.1

Other claims from this paper (4)

Intervention effect Continuous ridge use tended to reduce root-knot nematode damage to sweet potato compared with conventional tillage and ridging.
Observation Root-knot nematode density after radish harvest was low in upper ridges under both systems.
Intervention effect Tillage and ridging slightly increased nematode density in the upper ridge.
Recommendation The authors recommend continuous ridge use to reduce nematode damage to sweet potato.

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Reduced stomatal density, index, Rubisco and chloroplast changes may explain inhibited photosynthesis.

Taxon: capsicumCapsicumt0
Outcome: inhibition of the photosynthesise0
Qualifier: decrease of SD, SI, Rubisco content and by the changes of the chloroplaste0

Verbatim

e0
“inhibition of the photosynthesis could be explained by the decrease of SD, SI, Rubisco content and by the changes of the chloroplast”
✓ located verbatim in the source · abstract, characters 1039–1171

t0
“capsicum”
✓ located verbatim in the source · title, characters 66–74

Title

Stomatal development and associated photosynthetic performance of capsicum in response to differential light availabilities

Q. S. Fu; B. Zhao; Y. J. Wang; et al. Photosynthetica 2010. doi:10.1007/s11099-010-0024-5

Other claims from this paper (6)

Association Stomatal density and index first increased and then decreased with leaf expansion.
Intervention effect Low light lowered stomatal density and index after three days of leaf expansion.
Intervention effect Low light reduced photosynthetic capacity and electron transport measures in both cultivars.
Intervention effect Low light reduced total biomass and root/shoot ratio.
Intervention effect Low light decreased leaf thickness.
Intervention effect Low light increased specific leaf area and leaf pigment content.

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Low Hg sensitivity of N deprived roots suggests reduced channel activity or membrane density could lower Lpr.

Taxon: wheatTriticum aestivume1
Outcome: lowered root Lpre0
Direction: lowerede0
Qualifier: decrease in either the activity of water channels or their density in the PMe0

Verbatim

e1
“wheat plants”
✓ located verbatim in the source · abstract, characters 607–619

e0
“The lack of Hg-sensitivity in roots and PMs from N-deprived roots provides circumstantial evidence that lowered root Lpr may be due to a decrease in either the activity of water channels or their density in the PM”
✓ located verbatim in the source · abstract, characters 1693–1906

Title

Root hydraulic conductance: diurnal aquaporin expression and the effects of nutrient stress

David T. Clarkson; Micaela Carvajal; Tobias Henzler; et al. Journal of Experimental Botany 2000. doi:10.1093/jxb/51.342.61

Other claims from this paper (13)

Observation N, P and S deficiencies markedly reduced root hydraulic conductivity.
Observation Nitrate deprivation decreased root Lpr early.
Intervention effect Re-supplying deficient nutrients reversed the root conductivity decrease within 4–24 h.
Observation Root Lpr fluctuated diurnally in Lotus japonicus.
Intervention effect Brief HgCl2 treatments strongly affected root Lpr in nutrient sufficient wheat.
Intervention effect Removing Hg completely reversed its effect on wheat root Lpr.
Intervention effect Hg treatment did not affect the low Lpr of N or P deprived wheat roots.
Observation N deprived wheat root plasma membrane vesicles had much lower osmotic permeability than nitrate supplied roots.
Observation Vesicles from N deprived roots were insensitive to Hg.
Observation Lotus roots contained transcripts homologous to PIP1 and PIP2 aquaporins.
Observation Aquaporin homologue mRNA abundance had a marked diurnal cycle in Lotus roots.
Association Aquaporin mRNA extrema preceded root Lpr fluctuations by 2–4 h.
Mechanism Roots appear to monitor apoplastic nutrient supply and respond before metabolic disturbance.

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The fall in water use efficiency under rainfed conditions is attributed mainly to a decrease in transpiration efficiency.

Taxon: maizeZea mayse1
Treatment: rainfed conditionse0
Outcome: water use efficiencye1
Qualifier: the predominant decrease in TEe0

Verbatim

e1
“water use efficiency (q) of maize crops”
✓ located verbatim in the source · abstract, characters 90–129

e0
“the decrease in q under rainfed conditions was as a result of the predominant decrease in TE”
✓ located verbatim in the source · abstract, characters 1222–1314

Title

Water use of maize in response to planting density and irrigation

J. B.O. Ogola; T. R. Wheeler; P. M. Harris South African Journal of Plant and Soil 2005. doi:10.1080/02571862.2005.10634692

Other claims from this paper (7)

Intervention effect Higher planting density increased maize water use efficiency by 24% under irrigation.
Intervention effect Higher planting density reduced maize water use efficiency by 17% under rainfed conditions.
Intervention effect At the highest plant population density, direct soil evaporation beneath the canopy (Esc) was 4% less, owing to a larger leaf canopy.
Intervention effect At the highest plant population density, transpiration (T) was 9% greater, owing to a larger leaf canopy.
Intervention effect Irrigation increased both soil evaporation (Esc) and transpiration (T) by 41 %.
Intervention effect Neither soil evaporation nor transpiration was affected by the interaction between population density and water regime.
Mechanism The gain in water use efficiency at high density under irrigation is attributed to higher transpiration efficiency and lower soil evaporation.

“decrease in density”

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