Impact of elevated CO2 on utilization of soil moisture and associated soil biophysical parameters in pigeon pea (Cajanus cajan L.)

Saha, Saurav; Chakraborty, Debashis; Lata,; Pal, Madan; Nagarajan, S.

doi:10.1016/j.agee.2011.05.008

Cited by 35 publications

(16 citation statements)

References 53 publications

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“… 67 and Saha et al . 68 . Briefly, the diameter and height of each OTC was 3.0 m and 2.5 m, respectively, with the upper end having a frustum of 0.5 m to maintain similar temperature and relative humidity within the OTC as ambient atmosphere.…”

Section: Methodsmentioning

confidence: 99%

“…The [CO 2 ] concentration was monitored using a [CO 2 ] sensor (NDIR, Topak, USA) fixed in the middle of each OTC at 1.5 m height from the ground. Real time basis [CO 2 ] data logging, control and operation was performed by microprocessor through digital input and output module as described previously 67 , 68 . Temperature and humidity were recorded at every 30 min interval inside all OTCs with the help of temperature and humidity sensors (Model TRH 511, Ambetronics, Switzerland).…”

Section: Methodsmentioning

confidence: 99%

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High temperature stress during flowering and grain filling offsets beneficial impact of elevated CO2 on assimilate partitioning and sink-strength in rice

Chaturvedi

Bahuguna

Shah

et al. 2017

Sci Rep

Self Cite

110

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Elevated [CO2] (e[CO2]) environments have been predicted to improve rice yields under future climate. However, a concomitant rise in temperature could negate e[CO2] impact on plants, presenting a serious challenge for crop improvement. High temperature (HT) stress tolerant NL-44 and high yielding basmati Pusa 1121 rice cultivars, were exposed to e[CO2] (from panicle initiation to maturity) and a combination of e[CO2] + HT (from heading to maturity) using field based open top chambers. Elevated [CO2] significantly increased photosynthesis, seed-set, panicle weight and grain weight across both cultivars, more prominently with Pusa 1121. Conversely, e[CO2] + HT during flowering and early grain filling significantly reduced seed-set and 1000 grain weight, respectively. Averaged across both the cultivars, grain yield was reduced by 18 to 29%. Despite highly positive response with e[CO2], Pusa 1121 exposure to e[CO2] + HT led to significant reduction in seed-set and sink starch metabolism enzymatic activity. Interestingly, NL-44 maintained higher seed-set and resilience with starch metabolism enzymes under e[CO2] + HT exposure. Developing rice cultivars with higher [CO2] responsiveness incorporated with increased tolerance to high temperatures during flowering and grain filling using donors such as NL-44, will minimize the negative impact of heat stress and increase global food productivity, benefiting from [CO2] rich environments.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

High temperature stress during flowering and grain filling offsets beneficial impact of elevated CO2 on assimilate partitioning and sink-strength in rice

Chaturvedi

Bahuguna

Shah

et al. 2017

Sci Rep

Self Cite

110

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“…, Ainsworth and Long , Saha et al. ), and pulse crops, such as black gram (Vanaja et al. ), mung bean (Das et al.…”

Section: Introductionmentioning

confidence: 99%

“…Seneweera and Conroy (2005) have reported expansion of leaf blade in wheat at EC (700 ppm). Positive effects of EC on photosynthesis, water use efficiency (WUE) and growth of C 3 plants, such as wheat, rice, soybean, pigeon pea and cotton (Kimball et al 2002, Ziska et al 2004, Ainsworth and Long 2005, Saha et al 2011, and pulse crops, such as black gram (Vanaja et al 2007), mung bean (Das et al 2002) and green gram (Srivastava et al 2001), have been well documented. It is predicted that yield of most agricultural crops will increase under EC with productivity increases in the range of 15-41 % for C 3 crops and 5-10 % for C4 crops (IPCC 2007).…”

Section: Introductionmentioning

confidence: 99%

Cultivar Specific Response of CO₂ Fertilization on Two Tropical Mung Bean (Vigna radiata L.) Cultivars: ROS Generation, Antioxidant Status, Physiology, Growth, Yield and Seed Quality

Mishra

Agrawal

2014

J Agronomy Crop Science

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Increasing atmospheric carbon dioxide concentration (CO2) is an important component of global climate change that will have a significant impact on the productivity of crop plants. In recent years, growth and yield of agricultural crop plants have been shown to increase with elevated CO2 (EC) and have enticed considerable interest due to variation in the response of crop plants. In this study, comparative response of two mung bean cultivars (HUM‐2 and HUM‐6) was evaluated against EC at different growth stages under near‐natural conditions for two consecutive years. The plants were grown in ambient as well as EC (700 ppm) in specially designed open‐top chambers. Under elevated CO2, marked down‐regulation of reactive oxygen species (ROS) levels, membrane disruption and activities of superoxide dismutase and catalase were noticed in both the cultivars, but the extent of reduction was more in HUM‐6. As compared to ambient CO2, EC increased total chlorophyll, photosynthetic rate, growth and yield parameters. Cultivar‐specific response was noticed as HUM‐6 showed higher increase in yield attributes than HUM‐2. Under CO2 treatment, soluble protein and reducing sugars decreased while total soluble sugars and starch showed an opposite trend. Principal component analysis showed that both the cultivars responded more or less similarly to EC in their respective groupings of physiological and growth parameters, but the magnitude of ROS and antioxidative enzymes was variable. The experimental findings depict that both the cultivars of mung bean showed contrasting response against EC and paved the way for selecting the suitable cultivar having higher productivity in a future high‐CO2 environment.

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“…Similar increases in aggregate stability under eCO 2 were observed in two other global change field experiments and were associated with increased fungal production of the protein glomalin (Rillig et al ., ). A few studies have identified eCO 2 effects on aggregate size distribution or turnover (Rillig et al ., ; Six et al ., ; Niklaus et al ., ; Nie et al ., ), although others found no change with eCO 2 (Eviner & Chapin, ; Saha et al ., ; Pereira et al ., ). Although these prior studies make it clear that soil structural changes are possible under expected future levels of CO 2 , they provide limited insight into the range of changes that pore systems could experience, how other environmental conditions could influence the response to eCO 2 , and what implications structural changes could have for water retention by soils.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen‐mediated effects of elevated CO₂ on intra‐aggregate soil pore structure

Caplan

Giménez

Subroy

et al. 2016

Global Change Biology

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Soil pore structure has a strong influence on water retention, and is itself influenced by plant and microbial dynamics such as root proliferation and microbial exudation. Although increased nitrogen (N) availability and elevated atmospheric CO concentrations (eCO ) often have interacting effects on root and microbial dynamics, it is unclear whether these biotic effects can translate into altered soil pore structure and water retention. This study was based on a long-term experiment (7 yr at the time of sampling) in which a C pasture grass (Paspalum notatum) was grown on a sandy loam soil while provided factorial additions of N and CO . Through an analysis of soil aggregate fractal properties supported by 3D microtomographic imagery, we found that N fertilization induced an increase in intra-aggregate porosity and a simultaneous shift toward greater accumulation of pore space in larger aggregates. These effects were enhanced by eCO and yielded an increase in water retention at pressure potentials near the wilting point of plants. However, eCO alone induced changes in the opposite direction, with larger aggregates containing less pore space than under control conditions, and water retention decreasing accordingly. Results on biotic factors further suggested that organic matter gains or losses induced the observed structural changes. Based on our results, we postulate that the pore structure of many mineral soils could undergo N-dependent changes as atmospheric CO concentrations rise, having global-scale implications for water balance, carbon storage, and related rhizosphere functions.

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Impact of elevated CO2 on utilization of soil moisture and associated soil biophysical parameters in pigeon pea (Cajanus cajan L.)

Cited by 35 publications

References 53 publications

High temperature stress during flowering and grain filling offsets beneficial impact of elevated CO2 on assimilate partitioning and sink-strength in rice

High temperature stress during flowering and grain filling offsets beneficial impact of elevated CO2 on assimilate partitioning and sink-strength in rice

Cultivar Specific Response of CO₂ Fertilization on Two Tropical Mung Bean (Vigna radiata L.) Cultivars: ROS Generation, Antioxidant Status, Physiology, Growth, Yield and Seed Quality

Nitrogen‐mediated effects of elevated CO₂ on intra‐aggregate soil pore structure

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Impact of elevated CO2 on utilization of soil moisture and associated soil biophysical parameters in pigeon pea (Cajanus cajan L.)

Cited by 35 publications

References 53 publications

High temperature stress during flowering and grain filling offsets beneficial impact of elevated CO2 on assimilate partitioning and sink-strength in rice

High temperature stress during flowering and grain filling offsets beneficial impact of elevated CO2 on assimilate partitioning and sink-strength in rice

Cultivar Specific Response of CO2 Fertilization on Two Tropical Mung Bean (Vigna radiata L.) Cultivars: ROS Generation, Antioxidant Status, Physiology, Growth, Yield and Seed Quality

Nitrogen‐mediated effects of elevated CO2 on intra‐aggregate soil pore structure

Contact Info

Product

Resources

About

Cultivar Specific Response of CO₂ Fertilization on Two Tropical Mung Bean (Vigna radiata L.) Cultivars: ROS Generation, Antioxidant Status, Physiology, Growth, Yield and Seed Quality

Nitrogen‐mediated effects of elevated CO₂ on intra‐aggregate soil pore structure