Integrated biomarker responses of rice associated with grain yield in copper-contaminated soil

Htwe, Than; Chotikarn, Ponlachart; Duangpan, Saowapa; Onthong, Jumpen; Buapet, Pimchanok; Sinutok, Sutinee

doi:10.1007/s11356-021-16314-y

Cited by 8 publications

(4 citation statements)

References 52 publications

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“…PSII is considered an indicator of the efficiency of plants in utilizing light for carbon dioxide assimilation by crops [32]. This benefit was associated with a decrease in PhiNPQ, the energy that plants do not use for photochemical reactions and disperse mainly as heat, and PhiNO, which represents the fraction of energy that can give rise to oxidative stress, thus negatively impacting the crop [33]. It has been documented that a marked decrease in photosystem II efficiency and an increase in PhiNPQ and PhiNO can occur due to abiotic environmental stresses and are associated with reductions in crop yield [33].…”

Section: Discussionmentioning

confidence: 99%

“…This benefit was associated with a decrease in PhiNPQ, the energy that plants do not use for photochemical reactions and disperse mainly as heat, and PhiNO, which represents the fraction of energy that can give rise to oxidative stress, thus negatively impacting the crop [33]. It has been documented that a marked decrease in photosystem II efficiency and an increase in PhiNPQ and PhiNO can occur due to abiotic environmental stresses and are associated with reductions in crop yield [33]. In addition, in support of the above beneficial effects, LE induced increases in PSII active centers (qL) without damaging the photosystems, as indicated by the Fv/Fm ratio, representing the integrity of PSII [34].…”

Section: Discussionmentioning

confidence: 99%

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Insight into the Biostimulant Effect of an Aqueous Duckweed Extract on Tomato Plants

Priolo,

Tolisano,

Brienza

et al. 2024

Agriculture

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Agricultural systems must improve their sustainability and productivity to meet the growing global demand for food. A cost-effective and sustainable way is the development of biostimulants from plants rich in bioactive compounds. This study aimed to test an aqueous extract from Lemna minor L. (duckweed) on tomato plants at different concentrations (LE—0.1, 0.5 and 1.0%—weight/volume, w/v). Photosystem I and II activity, linear electron flow (LEF), electrochemical gradient across the thylakoid membrane (ECSt), shoot biomass production, root phenotyping, pigment and metabolite content were studied. LE improved many of these traits, with LE 0.5% being the most effective dosage. Compared to the untreated samples, LE significantly stimulated photosystems to use light energy while reducing the amount lost as heat (PhiNPQ and NPQt) or potentially toxic to chloroplasts (PhiNO). These results were supported by the improved shoot biomass production (number of leaves and fresh and dry weight) and root traits (number of tips, surface, volume and fresh and dry weight) found for LE-treated samples compared to untreated controls. Finally, the study highlighted that LE increased pigment and flavonoid contents. In conclusion, the research indicates that this species can be an effective and eco-friendly tool to stimulate beneficial responses in tomato.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Insight into the Biostimulant Effect of an Aqueous Duckweed Extract on Tomato Plants

Priolo,

Tolisano,

Brienza

et al. 2024

Agriculture

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“…An increased copper concentration in the flag of ysl16 mutants results in a significant reduction in rice fertility (Zheng et al, 2012). Rice grain yields decreased exponentially and significantly with increasing Cu levels (Htwe et al, 2022; Xu et al, 2006). As the content of copper noticeably declined in OsAT1 ‐Ri lines and increased in OsAT1 ‐OE lines (Figure 5), OsAT1 may negatively regulate growth and yield by affecting copper accumulation.…”

Section: Discussionmentioning

confidence: 99%

OsAT1, an anion transporter, negatively regulates grain size and yield in rice

Liu

Wang

Liu

et al. 2022

Physiologia Plantarum

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Improving the grain yield of rice is a central goal of basic and applied scientific research. Here, we identified an anion transporter, OsAT1, localized in the endoplasmic reticulum and Golgi. OsAT1 is highly expressed in flag, stem, and sheath as monitored using qRT‐PCR and pOsAT1::GUS. Thousand‐grain weight, grain weight per plant, and content of starch were significantly increased in OsAT1 knock‐down mutants (OsAT1‐Ri) but significantly decreased in OsAT1 overexpressed lines (OsAT1‐OE). In addition, the grain weight per plant increased by 6.17% to 6.78% in OsAT1‐RNAi lines, whereas it decreased by 45.93% to 46.76% in OsAT1‐OE lines, compared to wild‐type. Moreover, the copper content was noticeably reduced in flag leaf of OsAT1‐Ri lines and increased in OsAT1‐OE lines. RNA‐sequencing analysis of OsAT1‐OE lines revealed that the genes related to starch biosynthesis and metabolism pathway were enriched in the down‐regulated category. Thus, our results suggest that knock‐down of OsAT1 in rice possibly reduces copper accumulation and improves the accumulation of storage starch, hence, increasing the grain size and weight. OsAT1 may be a useful gene to consider for cereal breeding programs.

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“…Biomarkers are measurements at the tissue, cellular, biochemical, and molecular levels that have been raised as a tool to detect changes at lower organization levels, providing early signs of alterations at the population, community, or ecosystem levels (Cajaraville et al, 1993). Recently, the use of multi-biomarker approaches has gained significance in evaluating the health status of co-polluted soils from a holistic point of view (Htwe et al, 2022). For instance, oxidative stress can not only be assessed by measuring glutathione-S-transferase (GST), carboxylesterase (CbE), and catalase (CAT) activities but also by measuring carbonyl protein and malondialdehyde (MDA) content.…”

Section: Introductionmentioning

confidence: 99%

Integrative assessment of in situ combined bioremediation strategies applied to remediate soils spilled with sewage sludges

Pérez-Vázquez,

Urionabarrenetxea,

Artetxe

et al. 2024

Front. Environ. Sci.

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Landfills and waste disposal sites in the Basque Country are summarized in the inventory of soils that either currently support or have supported potentially polluting activities or facilities (Law 4/2015). Notably, “Landfill 17,” located in Gernika-Lumo, has been receiving, for decades, sewage sludges from the local wastewater treatment plant (WWTP) as agricultural amendment. In order to decontaminate and recover soil functionality, a combination of bioremediation (which involved bioagumentation and phyto- and vermitechnologies) and complementary bioremediation strategy (i.e., promotion and maintenance of the native vegetation) was implemented in situ. Physicochemical and ecotoxicological characterization were achieved. Furthermore, an ecotoxicological assessment of the soils upon flora and fauna was carried out through the application of different bioassays and biomarkers. Additionally, an integrative biomarker response (IBR/n) index was calculated to provide a holistic view of the soil general status. Critical pollutants [Cd, Cr, Ni, Pb, benzo(a)pyrene, and dieldrin] were observed in most of the treated sites. Microbial parameters did not present remarkable differences among sites. However, plant indicators pointed the non-treated site (MN8) as the unhealthiest. This was also observed in earthworms’ immune system, where cytotoxicity appears when exposed to non-treated soils. In conclusion, this field study showed that the combination of bioaugmentation, phytoremediation with native species, and vermiremediation is highly useful in eliminating mixed contamination, improving soil health, and ultimately restoring ecosystem functionality and biodiversity.

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Integrated biomarker responses of rice associated with grain yield in copper-contaminated soil

Cited by 8 publications

References 52 publications

Insight into the Biostimulant Effect of an Aqueous Duckweed Extract on Tomato Plants

Insight into the Biostimulant Effect of an Aqueous Duckweed Extract on Tomato Plants

OsAT1, an anion transporter, negatively regulates grain size and yield in rice

Integrative assessment of in situ combined bioremediation strategies applied to remediate soils spilled with sewage sludges

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