Effect of Free Manganese Activity on Yield and Uptake of Micronutrient Cations by Barley and Oat grown in Chelator-buffered Nutrient Solution

Lombnæs, Peder; Singh, Bal Ram

doi:10.1080/09064710310018109

Cited by 10 publications

(8 citation statements)

References 26 publications

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“…Actually, Ba was probably transported from the nutrient solution through the roots to the aboveground part. It can be hypothesized that free Ba was absorbed and readily transported in the upward movement of water in the xylem, in a way similar to that reported by Lombnaes and Singh (2003) for free manganese.…”

Section: Discussionsupporting

confidence: 72%

Barium effect on germination, plant growth, and antioxidant enzymes in Cucumis sativus L. plants

Sleimi

Kouki

Ammar

et al. 2021

Food Science & Nutrition

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Barium (Ba) is a nonessential element that can cause several deleterious effects in most organisms. Elevated Ba concentrations can be toxic for plants and may affect growth and disturbances in homeostasis. This study aimed to evaluate the Ba stress, the plant‐tolerance limits, and the detoxification strategy adopted by Cucumis sativus L. The effect of Ba on seed's germination and vegetative development of this species was evaluated. For germination test, different Ba concentrations were used (0, 200, 500, 1,000, and 2,000 μM). Results showed that germination was stimulated with 500 and 2,000 µM of Ba. The toxicity effect on plant development was studied by treating the plants with increasing doses of Ba (100, 200, 300, and 500 μM) during 45 days. Shoot and root dry biomass production decreased significantly with elevated Ba concentrations, although water content enhanced in the roots. The concentration of Ba, 500 µM, induced high Ba accumulation in shoots and roots (9 times higher than in the control plants). Moreover, results showed that catalase, guaiacol peroxidase, and ascorbate peroxidase activities were stimulated in the different tissues of cucumber plants which highlight the occurring of an oxidative damage through Ba treatments and the involvement of the plant enzymatic antioxidant defense system.

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Section: Discussionsupporting

confidence: 72%

Barium effect on germination, plant growth, and antioxidant enzymes in Cucumis sativus L. plants

Sleimi

Kouki

Ammar

et al. 2021

Food Science & Nutrition

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“…Mn starvation resulted in lower weights of root and shoot biomass, respectively (Fig. 1A, B; see also Lombnaes and Singh 2003). The proportionally greater decrease in root than in shoot weight during Mn deficiency may be a consequence of decreased CO 2 assimilation in the leaves (Fig.…”

Section: Discussionmentioning

confidence: 81%

Latent manganese deficiency increases transpiration in barley (Hordeum vulgare)

Hebbern

Laursen

Ladegaard

et al. 2009

Physiologia Plantarum

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To investigate if latent manganese (Mn) deficiency leads to increased transpiration, barley plants were grown for 10 weeks in hydroponics with daily additions of Mn in the low nM range. The Mn-starved plants did not exhibit visual leaf symptoms of Mn deficiency, but Chl a fluorescence measurements revealed that the quantum yield efficiency of PSII (F(v)/F(m)) was reduced from 0.83 in Mn-sufficient control plants to below 0.5 in Mn-starved plants. Leaf Mn concentrations declined from 30 to 7 microg Mn g(-1) dry weight in control and Mn-starved plants, respectively. Mn-starved plants had up to four-fold higher transpiration than control plants. Stomatal closure and opening upon light/dark transitions took place at the same rate in both Mn treatments, but the nocturnal leaf conductance for water vapour was still twice as high in Mn-starved plants compared with the control. The observed increase in transpiration was substantiated by (13)C-isotope discrimination analysis and gravimetric measurement of the water consumption, showing significantly lower water use efficiency in Mn-starved plants. The extractable wax content of leaves of Mn-starved plants was approximately 40% lower than that in control plants, and it is concluded that the increased leaf conductance and higher transpirational water loss are correlated with a reduction in the epicuticular wax layer under Mn deficiency.

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“…For expression profiling, Triticum aestivum plants were grown under calcium stress using hydroponic culture. Standard Lombnaes media [ 32 ] was used to grow plants for first fourteen days before transferring them to toxicity, deficiency and control media. The plants were kept under observation for calcium deficiency and toxicity symptoms after transferring them to deficient and toxic media.…”

Section: Discussionmentioning

confidence: 99%

“…Prior to germination seeds were surface sterilized using 1% bleach solution and were left for germination in the dark for five days. Seeds were grown for 14 days on standard media, according to Lombnaes and Singh [ 32 ]. The fourteenth day of growth on standard Lombnaes media is referred to as D0 in this paper.…”

Section: Methodsmentioning

confidence: 99%

Genome-wide analysis of wheat calcium ATPases and potential role of selected ACAs and ECAs in calcium stress

et al. 2017

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BackgroundP2- type calcium ATPases (ACAs-auto inhibited calcium ATPases and ECAs-endoplasmic reticulum calcium ATPases) belong to the P- type ATPase family of active membrane transporters and are significantly involved in maintaining accurate levels of Ca2+, Mn2+ and Zn2+ in the cytosol as well as playing a very important role in stress signaling, stomatal opening and closing and pollen tube growth. Here we report the identification and possible role of some of these ATPases from wheat.ResultsIn this study, ACA and ECA sequences of six species (belonging to Poaceae) were retrieved from different databases and a phylogenetic tree was constructed. A high degree of evolutionary relatedness was observed among P2 sequences characterized in this study. Members of the respective groups from different plant species were observed to fall under the same clade. This pattern highlights the common ancestry of P2− type calcium ATPases. Furthermore, qRT-PCR was used to analyse the expression of selected ACAs and ECAs from Triticum aestivum (wheat) under calcium toxicity and calcium deficiency. The data indicated that expression of ECAs is enhanced under calcium stress, suggesting possible roles of these ATPases in calcium homeostasis in wheat. Similarly, the expression of ACAs was significantly different in plants grown under calcium stress as compared to plants grown under control conditions. This gives clues to the role of ACAs in signal transduction during calcium stress in wheat.ConclusionHere we concluded that wheat genome consists of nine P2B and three P2A -type calcium ATPases. Moreover, gene loss events in wheat ancestors lead to the loss of a particular homoeolog of a gene in wheat. To elaborate the role of these wheat ATPases, qRT-PCR was performed. The results indicated that when plants are exposed to calcium stress, both P2A and P2B gene expression get enhanced. This further gives clues about the possible role of these ATPases in wheat in calcium management. These findings can be useful in future for genetic manipulations as well as in wheat genome annotation process.

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Effect of Free Manganese Activity on Yield and Uptake of Micronutrient Cations by Barley and Oat grown in Chelator-buffered Nutrient Solution

Cited by 10 publications

References 26 publications

Barium effect on germination, plant growth, and antioxidant enzymes in Cucumis sativus L. plants

Barium effect on germination, plant growth, and antioxidant enzymes in Cucumis sativus L. plants

Latent manganese deficiency increases transpiration in barley (Hordeum vulgare)

Genome-wide analysis of wheat calcium ATPases and potential role of selected ACAs and ECAs in calcium stress

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