Effect of O3 on Hydraulic Architecture in Pima Cotton (Biomass Allocation and Water Transport Capacity of Roots and Shoots)

Grantz, David A.; Yang, Shumei

doi:10.1104/pp.112.4.1649

Cited by 33 publications

(46 citation statements)

References 10 publications

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“…; Miller ; Temple et al . ; Temple ; Grantz & Yang ) and in other species (McLaughlin et al . ; Heggestad et al .…”

Section: Discussionmentioning

confidence: 98%

“…These results obtained at midday are consistent with numerous previous observations (Reich & Amundson ; Temple , ; Heath ; Temple et al . ; Reiling & Davison ; Grantz & Yang ; Grulke ).…”

Section: Discussionmentioning

confidence: 99%

“…Responses of root biomass were also similar to those of the shoot and midday g s (Cooley & Manning ; Kostka‐Rick et al . ; Grantz & Yang ; Grantz et al . ).…”

Section: Discussionmentioning

confidence: 99%

“…Plant WD has impacts in many ways similar to those of O 3 , both reducing magnitude and duration of gas exchange and suppressing biomass production (Tingey et al . ; Miller ; Grantz & Yang ; Grantz et al . ).…”

Section: Introductionmentioning

confidence: 99%

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Diel trends in stomatal response to ozone and water deficit: a unique relationship of midday values to growth and allometry in Pima cotton?

Grantz

Paudel

et al. 2015

Plant Biol J

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Plant responses to ozone (O3 ) and water deficit (WD) are commonly observed, although less is known about their interaction. Stomatal conductance (gs ) is both an impact of these stressors and a protective response to them. Stomatal closure reduces inward flux of O3 and outward flux of water. Stomatal measurements are generally obtained at midday when gas exchange is maximal, but these may not be adequate surrogates for stomatal responses observed at other times of day, nor for non-stomatal responses. Here, we find in Pima cotton that stomatal responses to O3 observed at midday do not reflect responses at other times. Stomata were more responsive to O3 and WD near midday, despite being at quasi-steady state, than during periods of active opening or closing in morning or evening. Stomatal responsivity to O3 was not coincident with maximum gas exchange or with periods of active regulation, but coincident with plant sensitivity to O3 previously determined in this cultivar. Responses of pigmentation and shoot productivity were more closely related to stomatal responses at midday than to responses at other times of day under well-watered (WW) conditions, reflecting higher stomatal responsivity, sensitivity to O3 , and magnitude of midday gs . Under WD conditions, shoot responses were more closely related to early morning gs. Root responses were more closely related to early morning gs under both WW and WD. Responses of stomata to O3 at midday were not good surrogates for stomatal responses early or late in the day, and may not adequately predicting O3 flux under WD or when maximum ambient concentrations do not occur near midday.

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“…; Miller ; Temple et al . ; Temple ; Grantz & Yang ) and in other species (McLaughlin et al . ; Heggestad et al .…”

Section: Discussionmentioning

confidence: 98%

“…These results obtained at midday are consistent with numerous previous observations (Reich & Amundson ; Temple , ; Heath ; Temple et al . ; Reiling & Davison ; Grantz & Yang ; Grulke ).…”

Section: Discussionmentioning

confidence: 99%

“…Responses of root biomass were also similar to those of the shoot and midday g s (Cooley & Manning ; Kostka‐Rick et al . ; Grantz & Yang ; Grantz et al . ).…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Diel trends in stomatal response to ozone and water deficit: a unique relationship of midday values to growth and allometry in Pima cotton?

Grantz

Paudel

et al. 2015

Plant Biol J

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show abstract

“…This is commonly observed in plants exposed to O 3 and is associated with inhibition of photosynthesis, translocation, and root development (Grantz and Farrar 2000;Grantz and Yang 1996;Mortensen and Engvild 1995;Rennenberg et al 1996). Total shoot biomass production was reduced by 72% in the GR biotype and 96% in the GS biotype at the highest O 3 (Figure 4a).…”

Section: Resultsmentioning

confidence: 88%

Ozone Enhances Adaptive Benefit of Glyphosate Resistance in Horseweed (Conyza canadensis)

Grantz¹,

Shrestha²,

Vu³

2008

Weed sci.

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Since the first identification of glyphosate resistance in horseweed in California in 2005, the glyphosate-sensitive (GS) biotype has become rare, whereas the glyphosate-resistant (GR) biotype has become dominant in the eastern San Joaquin Valley (SJV). This is an area exposed to regular usage of glyphosate and to high levels of ambient ground-level ozone (O3). A previous study showed that SJV biotypes of GR are more robust than GS in the absence of ozone. This advantage was reduced, though not eliminated, at elevated O3. This suggests that the rapid evolution of resistance to glyphosate was not linked to evolution of resistance to O3. In this study, we contrasted these responses to O3 in the presence of concurrent glyphosate pressure. The GR and GS biotypes differed in growth and injury, reflecting their known differential sensitivities to glyphosate, but responded similarly to O3 with no O3 × biotype interaction. Ozone imposed an unexpected, but ecologically important, impact that enhanced the performance advantage of GR over GS. In the presence of the combination of glyphosate and O3 the biomass of GR was reduced to low but viable levels, whereas the biomass of GS was reduced to nonviable levels that effectively removed it from the population. These data do not support a genetic linkage between resistance to glyphosate and to O3, but suggest that air pollution may have accelerated the fixation of glyphosate-resistance alleles in California horseweed populations.

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Tropospheric Ozone and Plants: Absorption, Responses, and Consequences

Cho¹,

Tiwari²,

Agrawal³

et al. 2011

Reviews of Environmental Contamination and Toxicology

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Ozone is now considered to be the second most important gaseous pollutant in our environment. The phytotoxic potential of O₃ was first observed on grape foliage by B.L. Richards and coworkers in 1958 (Richards et al. 1958). To date, unsustainable resource utilization has turned this secondary pollutant into a major component of global climate change and a prime threat to agricultural production. The projected levels to which O₃ will increase are critically alarming and have become a major issue of concern for agriculturalists, biologists, environmentalists and others plants are soft targets for O₃. Ozone enters plants through stomata, where it disolves in the apoplastic fluid. O₃ has several potential effects on plants: direct reaction with cell membranes; conversion into ROS and H₂O₂ (which alters cellular function by causing cell death); induction of premature senescence; and induction of and up- or down-regulation of responsive components such as genes , proteins and metabolites. In this review we attempt to present an overview picture of plant O₃ interactions. We summarize the vast number of available reports on plant responses to O₃ at the morphological, physiological, cellular, biochemical levels, and address effects on crop yield, and on genes, proteins and metabolites. it is now clear that the machinery of photosynthesis, thereby decreasing the economic yield of most plants and inducing a common morphological symptom, called the "foliar injury". The "foliar injury" symptoms can be authentically utilized for biomonitoring of O₃ under natural conditions. Elevated O₃ stress has been convincingly demonstrated to trigger an antioxidative defense system in plants. The past several years have seen the development and application of high-throughput omics technologies (transcriptomics, proteomics, and metabolomics) that are capable of identifying and prolifiling the O₃-responsive components in model and nonmodel plants. Such studies have been carried out ans have generated an inventory of O₃-Responsive components--a great resource to the scientific community. Recently, it has been shown that certain organic chemicals ans elevated CO₂ levels are effective in ameliorating O₃-generated stress. Both targeted and highthroughput approaches have advanced our knowledge concerning what O₃-triggerred signaling and metabolic pathways exist in plants. Moreover, recently generated information, and several biomarkers for O₃, may, in the future, be exploited to better screen and develop O₃-tolerant plants.

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Effect of O3 on Hydraulic Architecture in Pima Cotton (Biomass Allocation and Water Transport Capacity of Roots and Shoots)

Cited by 33 publications

References 10 publications

Diel trends in stomatal response to ozone and water deficit: a unique relationship of midday values to growth and allometry in Pima cotton?

Diel trends in stomatal response to ozone and water deficit: a unique relationship of midday values to growth and allometry in Pima cotton?

Ozone Enhances Adaptive Benefit of Glyphosate Resistance in Horseweed (Conyza canadensis)

Tropospheric Ozone and Plants: Absorption, Responses, and Consequences

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