Whole Plant CO<sub>2</sub> Exchange Measurements for Nondestructive Estimation of Growth

Dutton, R. G.; Jiao, J.; Tsujita, M. J.; Grodzinski, Bernard

doi:10.1104/pp.86.2.355

Cited by 72 publications

(46 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Whole plant CO2 exchange and C gain were monitored continuously as described by Dutton et al (2). Individual plants were placed in clear, acrylic whole plant assimilation chambers (0.82 x 0.52 x 0.45 m) illuminated from above by HID sodium halide lamps.…”

Section: Whole Plant Gas Exchangementioning

confidence: 99%

Whole Plant and Leaf Steady State Gas Exchange during Ethylene Exposure in Xanthium strumarium L.

Woodrow¹,

Jiao²,

Tsujita³

et al. 1989

Plant Physiol.

Self Cite

View full text Add to dashboard Cite

The effects of ethylene evolved from ethephon on leaf and whole plant photosynthesis in Xanthium strumarium L. were examined. Ethylene-induced epinasty reduced light interception by the leaves of ethephon treated plants by up to 60%. Gas exchange values of individual, attached leaves under identical assay conditions were not inhibited even after 36 hours of ethylene exposure, although treated leaves required a longer induction period to achieve steady state photosynthesis. The speed of translocation of recently fixed "C-assimilate movement was not seriously impaired following ethephon treatment; however, a greater proportion of the assimilate was partitioned downward toward the roots. Within 24 hours of ethephon treatment, the whole plant net carbon exchange rate expressed on a per plant basis or a leaf area basis had dropped by 35%. The apparent inhibition of net carbon exchange rate was reversed by physically repositioning the leaves with respect to the light source. Ethylene exposure also inhibited expansion of young leaves which was partially reversed when the leaves were repositioned. The data indicated that ethylene indirectly affected net C gain and plant growth through modification of light interception and altered sink demand without directly inhibiting leaf photosynthesis.The extent to which ethylene can affect photosynthetic CO2 fixation and potentially alter biomass accumulation and yield has been examined in several papers; however, the results have been inconsistent (10,(12)(13)(14)(15)(16)22). Studies ofwhole plant or attached whole leaf gas exchange have indicated that net carbon uptake is reduced in some but not all of the 30 species and cultivars surveyed (10, 12-16, 21, 22 stimulated ethylene release (5). Steady state laminar gas exchange in Zea mays L. and Pisum sativum L. was not inhibited by continuous exposure to ethylene gas (12) and the stomatal aperture of intact leaves was not affected by exposure to 10 ,L L' ethylene (1) even after a 24 h exposure (4).We recently reported (22) that continuous exposure to ethylene derived from ethephon had no effect on steady state photosynthesis and transpiration rates of Lycopersicon esculentum Mill. leaves. The partitioning of recently assimilated '4CO2 into sugar, amino acid, organic acid, and starch pools in the leaf was not altered by ethylene exposure, but during the 24 h following ethephon application there was an alteration in the partitioning of current photosynthate between root and shoot sinks, (e.g. developing flower clusters). Ethephon also caused a rapid epinastic response extending through the petioles and the leaves (22) suggesting that whole plant CO2 exchange (i.e. measured in a whole plant cuvette or a whole leafcuvette enclosing the petiole) could be significantly altered due to the reduction in total light interception (21).We have selected Xanthium strumarium L. as the experimental material for this study in order to avoid potentially anomalous conclusions arising from studies (21) on a single ethylene sensitive species s...

show abstract

Section: Whole Plant Gas Exchangementioning

confidence: 99%

Whole Plant and Leaf Steady State Gas Exchange during Ethylene Exposure in Xanthium strumarium L.

Woodrow¹,

Jiao²,

Tsujita³

et al. 1989

Plant Physiol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…[1]). Although R D does not account for photorespiration and may be affected by CO 2 , this method has successfully been used to relate C assimilation to dry matter (Dutton et al, 1988;Reddy et al, 1989;van Iersel and Kang, 2002) from growth chamber data. ).…”

Section: Spar Chambersmentioning

confidence: 99%

Temperature Influence on Potato Leaf and Branch Distribution and on Canopy Photosynthetic Rate

2006

View full text Add to dashboard Cite

Mature potato (Solanum tuberosum L. cv. Kennebec) canopies are composed of leaves originating from main-and axillary-stem branches. Canopy leaf distribution and its corresponding contribution to wholecanopy photosynthetic rates have not been quantified. An experiment using SPAR (Soil-Plant-Atmosphere-Research) chambers maintained at 16-h day/night thermoperiods of 14/10, 17/12, 20/15, 23/18, 28/23, and 34/29°C was conducted. Mature canopies were divided into three horizontal layers of equal depth. Canopies were defoliated at each layer, from the ground upward, on successive days. Response curves for photosynthetic rate vs. irradiance were obtained after each defoliation. Leaf area within each layer followed a quadratic relationship with temperature. The largest areas were between 16.6 and 22.1°C. Main-stem leaves accounted for .50% of the total leaf area at temperatures ,22°C, while the proportion of axillary-stem leaf area in each layer increased with temperature. Canopy maximum gross photosynthetic rates, A MAX , before harvest ranged from 9.5 to 34.8 mmol CO 2 m 22 s 21 (production-area basis) and were higher at 14/10, 17/12, and 20/15°C temperatures than at 23/18, 28/23, and 34/29°C. These values were largely related to the quantity of leaf area in each chamber. The value of A MAX and canopy light use efficiency declined as successive canopy layers were removed, primarily due to decreases in canopy light interception. These results indicate that the relative proportion of main-or axillary-stem leaves are not as important for potato canopy modeling considerations as is the need to simulate the correct quantity of leaf area.

show abstract

“…An increase in short-term photosynthesis does not necessarily translate into an increase in dry-matter production (Dutton et al 1988). Nevertheless, Purohit and Tregunna (1976) demonstrated increased growth of Douglas fir (Pseudotsuga menzeii) seedlings exposed to CO 2 at 1000 cm 3 m-3 for 90 days.…”

Section: Forest Response To·a Rise In Comentioning

confidence: 99%

Predicting Ecosystem Responses to Elevated CO₂Concentrations

Mooney¹,

Drake²,

Luxmoore³

et al. 1991

BioScience

338

150

View full text Add to dashboard Cite

Whole Plant CO₂ Exchange Measurements for Nondestructive Estimation of Growth

Cited by 72 publications

References 9 publications

Whole Plant and Leaf Steady State Gas Exchange during Ethylene Exposure in Xanthium strumarium L.

Whole Plant and Leaf Steady State Gas Exchange during Ethylene Exposure in Xanthium strumarium L.

Temperature Influence on Potato Leaf and Branch Distribution and on Canopy Photosynthetic Rate

Predicting Ecosystem Responses to Elevated CO₂Concentrations

Contact Info

Product

Resources

About

Whole Plant CO2 Exchange Measurements for Nondestructive Estimation of Growth

Cited by 72 publications

References 9 publications

Whole Plant and Leaf Steady State Gas Exchange during Ethylene Exposure in Xanthium strumarium L.

Whole Plant and Leaf Steady State Gas Exchange during Ethylene Exposure in Xanthium strumarium L.

Temperature Influence on Potato Leaf and Branch Distribution and on Canopy Photosynthetic Rate

Predicting Ecosystem Responses to Elevated CO2Concentrations

Contact Info

Product

Resources

About

Whole Plant CO₂ Exchange Measurements for Nondestructive Estimation of Growth

Predicting Ecosystem Responses to Elevated CO₂Concentrations