Identification of Pinus sylvestris clones with highest and lowest allelopathic potential

Bielinis, Ernest; Kwiatkowski, J.; Boiko, Sergii

doi:10.46490/vol25iss1pp052

Cited by 6 publications

(7 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Similar to our results, Bulut and Demir (2007) and Aklıbaşında et al (2017) reported bioassays where P. sylvestris leaves showed dose-dependent inhibitory effects on seed germination and growth of different grass species, and Bielinis et al (2019) observed similar effects on S. alba.…”

Section: Accepted Papersupporting

confidence: 92%

Predictive phytotoxic value of water-soluble allelochemicals in plant extracts for choosing a cover crop or mulch for specific weed control

et al. 2021

View full text Add to dashboard Cite

Cover crops and mulches have become an alternative for soil management in vineyards due to the agronomic, environmental, and economic advantages, especially the possibility of weed control. Implicitly to this objective lies the idea of assessing the potential herbicide effect of the allelochemicals released by different cover crop and mulch species. With this objective, the present work evaluated the phytotoxic effects of 12 aqueous extracts of selected species with potential use as a cover crop or mulch: a Bromus species mixture (B. hordeaceus L. and B. rubens L.), Festuca arundinacea Schreb., Hordeum murinum L., H. vulgare L., Vulpia ciliata Dumort., Medicago rugosa Desr., M. sativa L., Trifolium subterraneum L., T. incarnatum L., Phacelia tanacetifolia Benth., Sinapis alba L., and Pinus sylvestris L.,on the germination and early growth of three troublesome weeds (Conyza bonariensis (L.) Cronquist, Aster squamatus (Spreng.) Hieron, and Bassia scoparia (L.) A. J.). The different in vitro bioassays showed that aqueous extracts of some species significantly inhibited or reduced germination and root and shoot growth of the target weed species in a dose-response manner. Germination of A. squamatus and C. bonariensis was reduced by 100-80% by the different extracts applied at 50% concentration, and completely blocked at 100% concentration, except for M rugosa extract to which both species showed less sensitivity. Root elongation of A. squamatus was absolutely inhibited under every extract and concentration, whereas C. bonariensis root growth showed only some tolerance to the crude extracts of F. arundinaceaand P. sylvestris. Bassia scoparia was relatively tolerant to the aqueous plant extracts, except for T. subterraneum crude extract, which reduced total germination by 80%; otherwise, B. scoparia showed higher general sensitivity of shoot growth than the other two weed species. The chemical profiles of phenolic compounds of the aqueous extracts were obtained and identified by HPLC-DAD, the phenolic profiles of H. murinum, V. ciliata, and M. rugosa being reported in this work for the first time. Using stepwise regression, the influence of certain phenolic compounds from the aqueous extracts on the germination and early growth of weeds was predicted. Among other significant compounds, the flavonoid naringenin identified in T. subterraneumaqueous extract at 8.09 µg·mL-1 was predicted to underlie its specific phytotoxicity on B. scoparia germination. These results support the use of cover crops and mulches in weed management and can help to select the most suitable species to adopt according to the target weed species. Highlights The phytotoxic nature of the aqueous extracts of twelve conventional and novel cover crops and mulch species was demonstrated on three troublesome weed species in vineyards. Phenolic acids and flavonoids of the twelve aqueous extracts were identified and quantified by HPLC-DAD, and, by regression analysis, some allelochemicals were postulated as responsible for the phytotoxic effects. The water-soluble phenolic profiles of three potential cover crops, namely Hordeum murinum, Vulpia ciliata, and Medicago rugosa, are reported for the first time. In vitro germination and early root growth of Conyza bonariensis and Aster squamatus were almost entirely restricted by any of the twelve plants' aqueous extracts and presumably by the joint action of their particular allelopathic compounds. Bassia scoparia germination was relatively much less sensitive to the extracts, except for Trifolium subterraneum, for which the flavonoid naringenin was predicted to underlie its specific phytotoxicity.

show abstract

Section: Accepted Papersupporting

confidence: 92%

Predictive phytotoxic value of water-soluble allelochemicals in plant extracts for choosing a cover crop or mulch for specific weed control

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In addition, tree social status can be developed by allelopathy, which is a type of interaction between plants where the inhibitory effect on growth and germination can play an important role during the struggle for existence in interspecific competition. The species (or clone of one species) with a higher allelopathic potential might win the competition and place themselves in a better social position for growth [23].…”

Section: Introductionmentioning

confidence: 99%

Impact of Stand Density and Tree Social Status on Aboveground Biomass Allocation of Scots Pine Pinus sylvestris L.

Wertz

Bembenek

Karaszewski

et al. 2020

Forests

View full text Add to dashboard Cite

Stand density changes due to aging and thinning interventions. At the same time, the social status of trees develops and varies due to different genetic conditions as well as access to nutrients and light. Trees growing in diverse conditions gain their social status in the stand, which, in the end, influences their development and biomass allocation. The objective of this research was to discover if stand density or tree social status has an impact on a tree’s aboveground biomass allocation. The study was carried out in five premature and five mature pine stands, growing in the same soil conditions. The selected sample stands had a different growing density, from low to high. In each sample stand, 10 trees were selected to represent a different social status, according to the Schädelin classification. There were 100 trees felled in total (50 in the premature stands and 50 in the mature stands), for which the dry biomass of the stem, living and dead branches, needles, and cones was determined. The results showed that stand density only had an impact on the branches’ biomass fraction but not the stem and foliage fractions, while social status had an impact on all the fractions. Dominant and codominant trees, as well as those with developed crowns, had a smaller share of the stem and higher share of branches in comparison with trees of a lower social status.

show abstract

“…The belief is that the trees and the forest environment are essential for maintaining good mental health [35,36 ▪ ]. Many studies support the hypothesis of the effects of forest bathing that demonstrates the possibilities of enhancing well being, uplifting moods, decreasing negativity, and, eventually, reducing the consequences of stress [26,37–41].…”

Section: Therapeutic Forestmentioning

confidence: 99%

The impact of restorative green environment on mental health of big cities and the role of mental health professionals

Siah¹,

Kua

Goh³

2022

Current Opinion in Psychiatry

View full text Add to dashboard Cite

Purpose of reviewTo provide an update on insights into the effectiveness of the green environment and forest on the mental health of city dwellers; and the role of mental health professionals in advocating green restorative therapies. Recent findingsThe studies reviewed in this paper confirmed the mental health benefits on individuals who engaged in the green environment and forest. Results of studies showed that the participants reported significantly higher positive effects. However, it is difficult to compare studies because of marked differences in methodology and often lack of biological markers. With the recent global concern about climate warming, mental health professionals have a critical role to influence city planners on the importance of the green environment and the forest. In Singapore, the 'Therapeutic Garden' project and 'Therapeutic Rainforest' program are examples of mental health professionals working with government agencies for a 'city in nature'.

show abstract

Identification of Pinus sylvestris clones with highest and lowest allelopathic potential

Cited by 6 publications

References 21 publications

Predictive phytotoxic value of water-soluble allelochemicals in plant extracts for choosing a cover crop or mulch for specific weed control

Predictive phytotoxic value of water-soluble allelochemicals in plant extracts for choosing a cover crop or mulch for specific weed control

Impact of Stand Density and Tree Social Status on Aboveground Biomass Allocation of Scots Pine Pinus sylvestris L.

The impact of restorative green environment on mental health of big cities and the role of mental health professionals

Contact Info

Product

Resources

About