Leaf senescence in rice due to magnesium deficiency mediated defect in transpiration rate before sugar accumulation and chlorosis

Kobayashi, Natsuko I.; Saito, Takayuki; Iwata, Naoyuki; Ohmae, Yoshimi; Iwata, Ren; Tanoi, Keitaro; Nakanishi, Teruyuki

doi:10.1111/ppl.12003

Cited by 38 publications

(41 citation statements)

References 47 publications

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“…Tang et al (2012) and Yang et al (2012) reported lower g s in Mg deficient Citrus plants. A decrease of g s was also reported by Kobayashi et al (2013). In their study on rice plants, Mg deficiency had a more pronounced effect on transpiration rates, as the latter declined earlier than assimilation rates.…”

Section: Leaf Gas Exchange and Leaf Water-use Efficiency Affected By supporting

confidence: 62%

Magnesium deficiency decreases biomass water-use efficiency and increases leaf water-use efficiency and oxidative stress in barley plants

et al. 2016

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Aims In water-scarce agro-environments a clear understanding of how plant nutrients like magnesium (Mg) affect plant traits related to water-use efficiency (WUE) is of great importance. Magnesium plays a crucial role in photosynthesis and is thus a major determinant of biomass formation. This study investigated the effect of Mg deficiency on leaf and whole plant water-use efficiency, δ 13 C composition, hydrogen peroxide (H 2 O 2 ) production and the activity of key enzymes involved in ROS scavenging in barley. Methods Barley (Hordeum vulgare) was grown in hydroponic culture under three different levels of Mg supply (0.01, 0.1, 0.4 mM Mg). WUE was determined on the leaf-level (leaf-WUE), the biomass-level (biomass-WUE) and via carbon isotope discrimination (δ 13 C). Additionally, concentrations of Mg, chlorophyll and H 2 O 2 , and the activities of three antioxidative enzymes (ascorbate peroxidase, glutathione reductase and superoxide dismutase) in youngest fully expanded leaves were analyzed. Results Dry matter production was significantly decreased (by 34 % compared to control) in Mg deficient barley plants. Mg deficiency also markedly reduced leaf Mg concentrations and chlorophyll concentrations, but increased H 2 O 2 concentrations (up to 55 % compared to control) and the activity of antioxidative enzymes. Severe Mg deficiency decreased biomass-WUE by 20 %, which was not reflected regarding leaf-WUE. In line with leaf-WUE data, discrimination against 13 C (indicating time-integrated WUE) was significantly reduced under Mg deficiency. Conclusions Mg deficiency increased oxidative stress indicating impairment in carbon gain and decreased biomass-WUE. Our study suggests that biomass-WUE was not primarily affected by photosynthesis-related processes, but might be dependent on effects of Mg on night-time transpiration, respiration or root exudation.

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Section: Leaf Gas Exchange and Leaf Water-use Efficiency Affected By supporting

confidence: 62%

Magnesium deficiency decreases biomass water-use efficiency and increases leaf water-use efficiency and oxidative stress in barley plants

et al. 2016

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“…Purple colouration by anthocyanins is a common signal induced by various stresses, not only in rapeseed (Chalker‐Scott, ; Gould, ). Even nutrient deficiency (e.g., N, P or Mg) can result in anthocyanin accumulation (Kobayashi et al., ; Lawanson, Akpe, Akindele, & Fasalojo, ; Lovdal, Olsen, Slimestad, Verheul, & Lillo, ). In this study, N deficiency, induced by the waterlogging stress, may be responsible for the anthocyanin formation of older leaves.…”

Section: Discussionmentioning

confidence: 99%

Waterlogging events during stem elongation or flowering affect yield of oilseed rape (Brassica napus L.) but not seed quality

Wollmer

Pitann

Mühling

2017

J Agronomy Crop Science

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Oilseed rape suffers from serious waterlogging in many regions of the world limiting the cultivation area for rapeseed. Due to the man‐induced climate change, the risk of severe waterlogging events and associated therewith the damage of rapeseed plants will increase, even in Europe and North America. To investigate the effects of waterlogging on growth, yield and seed quality, rapeseed was cultivated throughout its vegetation period and waterlogged for 14 days at two different growth stages: at stem elongation (BBCH 31) or at floral bud appearance (BBCH 55). The experiments revealed that waterlogging at BBCH 31 affected plant growth and nutrient accumulation and finally resulted in lower yields. Waterlogging at BBCH 55 seriously impaired main racemes, but due to an increased production of secondary racemes, yield losses were lower than after waterlogging at BBCH 31. Oil quality was not affected by any waterlogging treatment under the chosen experimental conditions.

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“…In plants well supplied with Mg only about 20% of the total Mg is bound to chlorophyll, whereas the remaining about 80% is present in more mobile forms. 49 Kobayashi et al, 50 reported that transpiration alleviation occurred before sugar accumulation and chlorosis in Mg deficient leaves.…”

Section: Plant Responses Under Magnesium Deficiencymentioning

confidence: 99%

Plant Responses under Environmental Stress Conditions

Pessarakli¹,

Haghighi²,

Sheibanirad³

2015

APAR

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Considering increasing world population plants cultivation expanded in many poor areas. One of the most popular stress in soils is nutrient element depression. Moreover salinity and drought stress nowadays increased in the world. In order to improve plants tolerance to these conditions it necessary to realize plant mechanism under abiotic and biotic stresses. Plant tolerance to these stresses is dependent to their genetics, environmental situation and the combination of these two elements. This report gives an overview of the recent literature on the plants resistance limitation, physiological mechanism and symptoms of nutrient elements, salinity, drought and biotic stresses. The review will conclude by identifying several prospects for future researches aiming to improve the product resistance to the stress conditions. when compared to the younger leaves because of the high mobility of nitrogen through phloem. Nitrogen deficiency induces the chloroplast disintegration and loss of chlorophyll. Necrosis occurs at later stages and if nitrogen deficiency continues, it ultimately results in stunted growth and plant death. 15Plant responses under phosphorus deficiency: Phosphorus is the second important nutrient required by plants. It is an essential component of nucleic acids, phosphorylated sugars, lipids and proteins which control all life processes. Phosphorus forms high energy phosphate bonds with adenine, guanine and uridine which act as carriers of energy for many biological reactions. Plants with high growth rate require a large amount of available phosphorus which is often not found in many soils. Therefore, in an agriculture system, it is usually necessary to add P fertilizer to the soils.

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Leaf senescence in rice due to magnesium deficiency mediated defect in transpiration rate before sugar accumulation and chlorosis

Cited by 38 publications

References 47 publications

Magnesium deficiency decreases biomass water-use efficiency and increases leaf water-use efficiency and oxidative stress in barley plants

Magnesium deficiency decreases biomass water-use efficiency and increases leaf water-use efficiency and oxidative stress in barley plants

Waterlogging events during stem elongation or flowering affect yield of oilseed rape (Brassica napus L.) but not seed quality

Plant Responses under Environmental Stress Conditions

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