Photosynthesis, Grain Yield, and Nitrogen Utilization in Rice and Wheat

Makino, Amane

doi:10.1104/pp.110.165076

Cited by 428 publications

(319 citation statements)

References 36 publications

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“…The increment in photosynthesis and plant growth by SA under salt stress is attributed to increased S-assimilation and higher allocation of N and S to Rubisco protein and increased availability of CO 2 for Rubisco.This might be responsible for its favorable effect on plant growth and development. Makino 49 established a positive relationship of leaf Rubisco with photosynthesis in most of the plants and became beneficial for the survival of plants under stressful conditions. Furthermore, it was observed that SA improved the photosynthetic attributes, PS II activity, water-use efficiency, plant dry mass and lead area.…”

Section: Discussionmentioning

confidence: 99%

Exogenous salicylic acid improves photosynthesis and growth through increase in ascorbate-glutathione metabolism and S assimilation in mustard under salt stress

Nazar

Umar

Khan

2015

Plant Signaling & Behavior

197

114

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Ascorbate (AsA)-glutathione (GSH) cycle metabolism has been regarded as the most important defense mechanism for the resistance of plants under stress. In this study the influence of salicylic acid (SA) was studied on ascorbateglutathione pathway, S-assimilation, photosynthesis and growth of mustard (Brassica juncea L.) plants subjected to 100 mM NaCl. Treatment of SA (0.5 mM) alleviated the negative effects of salt stress and improved photosynthesis and growth through increase in enzymes of ascorbate-glutathione pathway which suggest that SA may participate in the redox balance under salt stress. The increase in leaf sulfur content through higher activity of ATP sulfurylase (ATPS) and serine acetyl transferase (SAT) by SA application was associated with the increased accumulation of glutathione (GSH) and lower levels of oxidative stress. These effects of SA were substantiated by the findings that application of SAanalog, 2,6, dichloro-isonicotinic acid (INA) and 1 mM GSH treatment produced similar results on rubisco, photosynthesis and growth of plants establishing that SA application alleviates the salt-induced decrease in photosynthesis mainly through inducing the enzyme activity of ascorbate-glutathione pathway and increased GSH production. Thus, SA/GSH could be a promising tool for alleviation of salt stress in mustard plants.

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Section: Discussionmentioning

confidence: 99%

Exogenous salicylic acid improves photosynthesis and growth through increase in ascorbate-glutathione metabolism and S assimilation in mustard under salt stress

Nazar

Umar

Khan

2015

Plant Signaling & Behavior

197

114

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“…With the region's population projected to increase by another billion by the mid-century, new approaches to increase food production are needed (Chen et al, 2014). With a limited agricultural land area, the intensive agricultural regions of China are facing serious environmental problems due to large inputs of chemical fertilizer and low nitrogen use efficiency (NUE) (Ju et al, 2009;Makino, 2011). Thus, integrated soil-crop system management (ISSM), which redesigns the whole production system based on the local environment and draws on appropriate fertilizer compounds and application ratios, crop densities and advanced water management regimes, has been advocated and developed to simultaneously increase crop productivity and NUE with low carbon dioxide (CO 2 ) equivalent emissions per unit product in China (Chen et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Global warming potential and greenhouse gas intensity in rice agriculture driven by high yields and nitrogen use efficiency

Zhang

Liu

et al. 2016

Biogeosciences

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Abstract. Our understanding of how global warming potential (GWP) and greenhouse gas intensity (GHGI) is affected by management practices aimed at food security with respect to rice agriculture remains limited. In the present study, a field experiment was conducted in China to evaluate the effects of integrated soil-crop system management (ISSM) on GWP and GHGI after accounting for carbon dioxide (CO 2 ) equivalent emissions from all sources, including methane (CH 4 ) and nitrous oxide (N 2 O) emissions, agrochemical inputs and farm operations and sinks (i.e., soil organic carbon sequestration). The ISSM mainly consisted of different nitrogen (N) fertilization rates and split, manure, Zn and Na 2 SiO 3 fertilization and planting density for the improvement of rice yield and agronomic nitrogen use efficiency (NUE). Four ISSM scenarios consisting of different chemical N rates relative to the local farmers' practice (FP) rate were carried out, namely, ISSM-N1 (25 % reduction), ISSM-N2 (10 % reduction), ISSM-N3 (FP rate) and ISSM-N4 (25 % increase). The results showed that compared with the FP, the four ISSM scenarios significantly increased the rice yields by 10, 16, 28 and 41 % and the agronomic NUE by 75, 67, 35 and 40 %, respectively. In addition, compared with the FP, the ISSM-N1 and ISSM-N2 scenarios significantly reduced the GHGI by 14 and 18 %, respectively, despite similar GWPs. The ISSM-N3 and ISSM-N4 scenarios remarkably increased the GWP and GHGI by an average of 69 and 39 %, respectively. In conclusion, the ISSM strategies are promising for both food security and environmental protection, and the ISSM scenario of ISSM-N2 is the optimal strategy to realize high yields and high NUE together with low environmental impacts for this agricultural rice field.

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“…In addition, the measurements are instantaneous, practical, low-cost and can be performed at the field, which allows the correction of N deficiency in the same crop year. N fertilization contributes to the increase of crop yield, since more than 90% of plant biomass derives from the photosynthesis, which directly induces plant development (Makino, 2011).…”

Section: Resultsmentioning

confidence: 99%

Efficiency of portable chlorophyll meters in assessing the nutritional status of wheat plants

Schlichting

Bonfim-Silva

Silva

et al. 2015

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe objective of this study was to verify the efficiency of two portable chlorophyll meters (Minolta SPAD ® 502 and Falker ClorofiLOG ® 1030) in assessing the nutritional status of wheat plants, correlating the indices from the devices and the direct determination of chlorophyll content with the concentration of nitrogen (N) in the plant. The experiment was conducted in a greenhouse, in pots with 5 dm 3 of Oxisol, in a completely randomized design, with six N doses (0, 80, 160, 240, 320 and 400 mg dm Eficiência de medidores portáteis de clorofila na avaliação do estado nutricional de plantas de trigo R E S U M O Objetivou-se, neste trabalho, verificar a eficiência de dois medidores portáteis de clorofila (Minolta SPAD ® 502 e Falker ClorofiLOG ® 1030) na avaliação do estado nutricional de plantas de trigo correlacionando-se os índices dos aparelhos e a determinação direta do teor de clorofila com a concentração de nitrogênio na planta. O experimento foi realizado em casa de vegetação e conduzido em vasos com 5 dm 3 de solo -Latossolo Vermelho distrófico. O delineamento foi inteiramente casualizado, com seis doses de nitrogênio (0, 80, 160, 240, 320 e 400 mg dm -3 ) e cinco repetições. Aos 47 dias após a emergência foram realizadas as leituras dos índices SPAD e Falker, a quantificação do teor de clorofila e a concentração de nitrogênio nas plantas de trigo, além da análise de variância e do teste de correlação, ambos até 5% de probabilidade. Os clorofilômetros Minolta SPAD ® 502 e Falker ClorofiLOG ® 1030 não apresentam diferença entre si na determinação indireta de clorofila nas plantas de trigo. O índice Falker realizou leituras iguais, estatisticamente, do teor de clorofila. Os índices indiretos de clorofila e o teor de clorofila obtiveram alta correlação com a concentração de nitrogênio na planta.

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Photosynthesis, Grain Yield, and Nitrogen Utilization in Rice and Wheat

Cited by 428 publications

References 36 publications

Exogenous salicylic acid improves photosynthesis and growth through increase in ascorbate-glutathione metabolism and S assimilation in mustard under salt stress

Exogenous salicylic acid improves photosynthesis and growth through increase in ascorbate-glutathione metabolism and S assimilation in mustard under salt stress

Global warming potential and greenhouse gas intensity in rice agriculture driven by high yields and nitrogen use efficiency

Efficiency of portable chlorophyll meters in assessing the nutritional status of wheat plants

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