Biochemical recognition in seeds: Germination of<scp><i>Rumex obtusifolius</i></scp>is promoted by leaves of facilitative adult conspecifics

Ohsaki, Haruna; Mukai, Hiromi; Akira, Yamowo

doi:10.1111/1442-1984.12275

Cited by 9 publications

(10 citation statements)

References 53 publications

(69 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Each individual was separated by at least 2 km. As interspecific competitors, we focused on P. asiatica L., T. repens L. and F. ovina L. These species are the dominant competitors of R. obtusifolius in Japan (Ohsaki et al., 2020). A total of 100 seeds of P. asiatica were collected from two individuals in the field in Aomori Prefecture.…”

Section: Methodsmentioning

confidence: 99%

Intraspecific interaction of host plants leads to concentrated distribution of a specialist herbivore through metabolic alterations in the leaves

et al. 2021

Self Cite

View full text Add to dashboard Cite

Recent studies suggest that changes in leaf traits due to interactions between plants affect resource utilisation by herbivores, as well as herbivore distribution. However, this has not yet been confirmed experimentally. Here, we investigated the effects of phenotypic plasticity in leaf traits of Rumex obtusifolius (host plant) in response to intraspecific and interspecific interactions on the distribution of two leaf beetles, Gastrophysa atrocyanea (specialist herbivore) and Galerucella grisescens (generalist herbivore). We investigated the local population density of R. obtusifolius plants and the presence of leaf beetles on the plants at five study sites. Leaf chemicals (condensed tannins and total phenolics) were compared between aggregated and solitary R. obtusifolius plants. To clarify the effects of the interaction environment of R. obtusifolius plants on their leaf traits and on resource utilisation by the leaf beetles, we compared leaf chemicals and preferences of adult leaf beetles among treatments where R. obtusifolius experienced intraspecific interaction, interspecific interaction or no interaction in cultivation experiments. Finally, we evaluated the independent and combined effects of patch size and intraspecific interaction on leaf beetle distribution in mesocosm experiments. In the field, the presence of the specialist leaf beetle G. atrocyanea was positively correlated with the local population density (rosette overlap ratio) of R. obtusifolius plants; however, there was no correlation in the case of the generalist leaf beetle G. grisescens. In the cultivation experiments, plants in the intraspecific interaction treatment increased their leaf concentrations of condensed tannins and total phenolics, and G. atrocyanea consumed more of these leaves than leaves in other treatments. Similar results were observed in the field. In the mesocosm experiments, larger numbers of G. atrocyanea were distributed on R. obtusifolius plants exposed to below‐ground intraspecific interaction than on plants not exposed to intraspecific interaction. Our results provide experimental evidence that leaf‐trait changes in response to intraspecific interaction between host plants influence specialist herbivore distribution. This highlights the need to integrate plant–plant interactions into our understanding of plant–animal interactions. A free Plain Language Summary can be found within the Supporting Information of this article.

show abstract

Section: Methodsmentioning

confidence: 99%

Intraspecific interaction of host plants leads to concentrated distribution of a specialist herbivore through metabolic alterations in the leaves

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…26 , 27 Festuca ovina and P. asiatica are strong competitors of R. obtusifolius : grassland plant communities often shift from being R. obtusifolius dominant to being F. ovina dominant; 28 and, like R. obtusifolius, P. asiatica is a perennial herb that develops a leaf rosette. Leaf chemicals in R. obtusifolius inhibit the germination of F. ovina , 29 and R. obtusifolius may increase them as a competitive response.…”

Section: Resultsmentioning

confidence: 99%

Effects of indirect plant–plant interaction via root exudate on growth and leaf chemical contents in Rumex obtusifolius

Ohsaki

Yamawo

2022

Plant Signaling & Behavior

Self Cite

View full text Add to dashboard Cite

“…This preference for seedlings may be explained by tender leaves with higher nutritive value in young plants and fewer secondary compounds. As leaves mature, the nutrient content declines, excreted salts accumulate on the surface, and leaf toughness increases with metabolic changes in internal fluxes of carbon and minerals (Balakrishnan et al, 2016; Choong, 1996; Elster et al, 1999; Faraco & Lana, 2004; Farnsworth & Ellison, 1991; Ohsaki et al, 2020; Robertson & Duke, 1987; Romero et al, 2006; Roth‐Nebelsick et al, 2001; Saur et al, 1999; Silva et al, 2015; Tiffin, 2002). In another study, Farnsworth and Ellison (1991) found variations in damage between trees and seedlings in Neotropical mangroves (Belize), with higher percentages sometimes occurring in trees.…”

Section: Discussionmentioning

confidence: 99%

“…Plants can be subjected to different levels of herbivory during their development from seed to maturity (Ohsaki et al, 2020; Tiffin, 2002). Studies have shown that herbivores generally cause greater damage to seedlings than to mature plants (Elster et al, 1999; Fenner et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

First report of Avicennia germinans (Acanthaceae) as a larval host of Junonia litoralis (Nymphalidae) causing higher foliar damage in seedlings than trees

Zamora‐Tovar

Fierro‐Cabo

Lindig‐Cisneros

et al. 2022

Plant Species Biology

View full text Add to dashboard Cite

Herbivory is considered an important biotic interaction in mangroves. Nevertheless, detailed information on specific plant–herbivore interactions that might have considerable influence in ecological and evolutionary processes is still very poor and fragmented. Herbivory damage was quantified during December 2015 in seedlings and trees in monospecific stands of Avicennia germinans in Laguna Madre of Tamaulipas, Mexico. The use of this mangrove species as a larval host is well documented; however, this is the first report for Junonia litoralis. These lepidopteran larvae consumed, on average, 10.2% of the leaf area; but herbivory was higher on seedlings (mean 15%) than on trees (mean 2.3%). These values are comparable to estimations of 10% mean herbivory damage in other field studies. This indicates that herbivores cause greater damage in seedlings than in trees. Herbivore activity by J. litoralis only occurred in A. germinans and did not affect associated herbs or shrubs of other species. The close interaction between J. litoralis and A. germinans may have profound implications for ecological and evolutionary processes of mangroves and enables a better understanding of ecosystem function and its conservation. Further studies are needed to investigate such interactions and their implications including long‐term monitoring of interstitial salinity and leaf chemistry at different stages of growth and maturity of the host species.

show abstract

Biochemical recognition in seeds: Germination ofRumex obtusifoliusis promoted by leaves of facilitative adult conspecifics

Cited by 9 publications

References 53 publications

Intraspecific interaction of host plants leads to concentrated distribution of a specialist herbivore through metabolic alterations in the leaves

Intraspecific interaction of host plants leads to concentrated distribution of a specialist herbivore through metabolic alterations in the leaves

Effects of indirect plant–plant interaction via root exudate on growth and leaf chemical contents in Rumex obtusifolius

First report of Avicennia germinans (Acanthaceae) as a larval host of Junonia litoralis (Nymphalidae) causing higher foliar damage in seedlings than trees

Contact Info

Product

Resources

About