Is annual or perennial harvesting more efficient in Ni phytoextraction?

Adamidis, George C.; Aloupi, Maria; Mastoras, Petros; Papadaki, Maria Ioanna; Dimitrakopoulos, Panayiotis G.

doi:10.1007/s11104-017-3287-9

Cited by 16 publications

(17 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After the above variables were measured, roots were separated and rinsed with water to remove adhering debris. Roots and above-ground plant parts were oven-dried at 80 °C for 48 h 95,96 , and weighed to estimate their biomass.…”

Section: Methodsmentioning

confidence: 99%

Pollinators enhance crop yield and shorten the growing season by modulating plant functional characteristics: A comparison of 23 canola varieties

Adamidis

Cartar

Melathopoulos

et al. 2019

Sci Rep

Self Cite

View full text Add to dashboard Cite

Insect pollination of flowers should change the within-season allocation of resources in plants. But the nature of this life-history response, particularly regarding allocation to roots, photosynthetic structures, and flowers, is empirically unresolved. This study uses a greenhouse experiment to investigate the effect of insect pollination on the reproductive output of 23 varieties of a globally important crop—canola (Brassica napus). Overall, insect pollination modified the functional characteristics (flower timing & effort, plant size & shape, seed packaging, root biomass) of canola, increasing seed production and quality, and pollinator dependence. Reproductive output and pollinator dependence were defined by strong trait trade-offs, which ranged from more pollinator-dependent plants favouring early reproductive effort, to less pollinator-dependent plants favouring a prolonged phenology with smaller plant size and lower seed quality. Seed production decreased with pollinator dependence in the absence of pollinators. The agricultural preference for hybrid varieties will increase seed production compared to open-pollinated varieties, but, even so, pollinators typically enhance seed production of both types. Our study elucidates how insect pollination alters the character and function of a globally important crop, supporting optimization of yield via intensification of insect pollination, and highlights the beneficial effects of insect pollination early in the season.

show abstract

Section: Methodsmentioning

confidence: 99%

Pollinators enhance crop yield and shorten the growing season by modulating plant functional characteristics: A comparison of 23 canola varieties

Adamidis

Cartar

Melathopoulos

et al. 2019

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…Nonetheless, although long overlooked, phloem translocation has more recently been demonstrated in both woody tropical and in herbaceous hyperaccumulating plant species [ 50 ]. Although phloem transport has not been proven in O. lesbiaca , the high Ni levels recorded in the flowers of this species (way above 1000 mg.kg −1 ; [ 32 , 33 ]) provide supportive evidence to this process since flowers are the main sink of phloem translocation [ 50 ]. In line with this hypothesis, Bani et al [ 44 ] concluded that P. nowackiana should obtain nutrients exclusively from the phloem of A. murale given that its low transpiration rate could not account for nutrient uptake via diverting the flow of xylem from the host [ 53 ].…”

Section: Discussionmentioning

confidence: 99%

“…A higher nickel concentration in tissues of parasites attacking O. lesbiaca individuals relative to those infecting A. murale [ 44 ] may express the higher nickel hyperaccumulation capacity recorded in O. lesbiaca [ 31 , 32 ]. However, the relationship between O. lesbiaca and parasite Ni levels as expressed through parasite-to- O. lesbiaca nickel concentration quotients could not be attributed to soil nickel concentrations.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Broomrape Species Parasitizing Odontarrhena lesbiaca (Brassicaceae) Individuals Act as Nickel Hyperaccumulators

Dimitrakopoulos

Aloupi

Tetradis

et al. 2021

Plants

Self Cite

View full text Add to dashboard Cite

The elemental defense hypothesis supports that metal hyperaccumulation in plant tissues serves as a mechanism underpinning plant resistance to herbivores and pathogens. In this study, we investigate the interaction between Odontarrhena lesbiaca and broomrape parasitic species, in the light of the defense hypothesis of metal hyperaccumulation. Plant and soil samples collected from three serpentine sites in Lesbos, Greece were analyzed for Ni concentrations. Phelipanche nowackiana and Phelipanche nana were found to infect O. lesbiaca. In both species, Ni concentration decreased gradually from tubercles to shoots and flowers. Specimens of both species with shoot nickel concentrations above 1000 mg.kg−1 were found, showing that they act as nickel hyperaccumulators. Low values of parasite to O. lesbiaca leaf or soil nickel quotients were observed. Orobanche pubescens growing on a serpentine habitat but not in association with O. lesbiaca had very low Ni concentrations in its tissues analogous to excluder plants growing on serpentine soils. Infected O. lesbiaca individuals showed lower leaf nickel concentrations relative to the non-infected ones. Elevated leaf nickel concentration of O. lesbiaca individuals did not prevent parasitic plants to attack them and to hyperaccumulate metals to their tissues, contrary to predictions of the elemental defense hypothesis.

show abstract

“…Phytostabilization aims to establish a plant cover on polluted sites and to reduce further spread of pollutants and is a common practice around the world to revegetate mine tailings [8,9]. Phytoextraction comprises the process of plant root uptake, root-to-shoot translocation, shoot accumulation and detoxification to concentrate pollutants in harvestable biomass [10,11]. These processes strongly depend on plant growth-promoting bacteria (PGPB), which inhabit the rhizosphere and the internal tissues of plants.…”

Section: Introductionmentioning

confidence: 99%

Phytostabilization of Polluted Military Soil Supported by Bioaugmentation with PGP-Trace Element Tolerant Bacteria Isolated from Helianthus petiolaris

et al. 2020

View full text Add to dashboard Cite

Lead (Pb) and cadmium (Cd) are major environmental pollutants, and the accumulation of these elements in soils and plants is of great concern in agricultural production due to their toxic effects on crop growth. Also, these elements can enter into the food chain and severely affect human and animal health. Bioaugmentation with plant growth-promoting bacteria (PGPB) can contribute to an environmentally friendly and effective remediation approach by improving plant survival and promoting element phytostabilization or extraction under such harsh conditions. We isolated and characterised Pb and Cd-tolerant root-associated bacteria from Helianthus petiolaris growing on a Pb/Cd polluted soil in order to compose inoculants that can promote plant growth and also ameliorate the phytostabilization or phytoextraction efficiency. One hundred and five trace element-tolerant rhizospheric and endophytic bacterial strains belonging to eight different genera were isolated from the aromatic plant species Helianthus petiolaris. Most of the strains showed multiple PGP-capabilities, ability to immobilise trace elements on their cell wall, and promotion of seed germination. Bacillus paramycoides ST9, Bacillus wiedmannii ST29, Bacillus proteolyticus ST89, Brevibacterium frigoritolerans ST30, Cellulosimicrobium cellulans ST54 and Methylobacterium sp. ST85 were selected to perform bioaugmentation assays in greenhouse microcosms. After 2 months, seedlings of sunflower (H. annuus) grown on polluted soil and inoculated with B. proteolyticus ST89 produced 40% more biomass compared to the non-inoculated control plants and accumulated 20 % less Pb and 40% less Cd in the aboveground plant parts. In contrast, B. paramycoides ST9 increased the bioaccumulation factor (BAF) of Pb three times and of Cd six times without inhibiting plant growth. Our results indicate that, depending on the strain, bioaugmentation with specific beneficial bacteria can improve plant growth and either reduce trace element mobility or enhance plant trace element uptake.

show abstract

Is annual or perennial harvesting more efficient in Ni phytoextraction?

Cited by 16 publications

References 39 publications

Pollinators enhance crop yield and shorten the growing season by modulating plant functional characteristics: A comparison of 23 canola varieties

Pollinators enhance crop yield and shorten the growing season by modulating plant functional characteristics: A comparison of 23 canola varieties

Broomrape Species Parasitizing Odontarrhena lesbiaca (Brassicaceae) Individuals Act as Nickel Hyperaccumulators

Phytostabilization of Polluted Military Soil Supported by Bioaugmentation with PGP-Trace Element Tolerant Bacteria Isolated from Helianthus petiolaris

Contact Info

Product

Resources

About