Primed acclimation: A physiological process offers a strategy for more resilient and irrigation-efficient crop production

Vincent, Christopher; Rowland, Diane; Schaffer, Bruce; Bassil, Elias; Racette, Kelly; Zurweller, Brendan A.

doi:10.1016/j.plantsci.2019.110240

Cited by 31 publications

(25 citation statements)

References 133 publications

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“…Therefore, based on the present results of this study, no clear effects of the N application rate on tomato root growth could be inferred. An increase in root growth under the DI irrigation condition is an indication of tomato genetic plasticity to changes in the environment known as primed acclimation (Rowland et al, 2012;Vincent et al, 2019). This term is often used when a crop is subjected to a mild water deficit condition during the vegetative growth stages, and it has been applied as an important water conservation strategy for reducing irrigation application and increasing iWUE in crop production (Vincent et al, 2019).…”

Section: Stage Descriptionmentioning

confidence: 99%

“…An increase in root growth under the DI irrigation condition is an indication of tomato genetic plasticity to changes in the environment known as primed acclimation (Rowland et al, 2012;Vincent et al, 2019). This term is often used when a crop is subjected to a mild water deficit condition during the vegetative growth stages, and it has been applied as an important water conservation strategy for reducing irrigation application and increasing iWUE in crop production (Vincent et al, 2019). In an agroecosystem, primed acclimation (PA) is a physiological response of the crop (often through modifications of the aboveground and belowground biomass partitioning ratio) to adjust to or recover from the abiotic stress conditions (Rowland et al, 2012).…”

Section: Stage Descriptionmentioning

confidence: 99%

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Tomato Growth, Yield, and Root Development, Soil Nitrogen and Water Distribution as Affected by Nitrogen and Irrigation Rates on a Florida Sandy Soil

Ayankojo¹,

Morgan²,

Kadyampakeni³

et al. 2020

horts

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Effective nutrient and irrigation management practices are critical for optimum growth and yield in open-field fresh-market tomato production. Although nutrient and irrigation management practices have been well-studied for tomato production in Florida, more studies of the current highly efficient production systems would be considered essential. Therefore, a two-season (Fall 2016 and Spring 2017) study was conducted in Immokalee, FL, to evaluate the effects of the nitrogen (N) rates under different irrigation regimes and to determine the optimum N requirement for open-field fresh-market tomato production. To evaluate productivity, the study investigated the effects of N rates and irrigation regimes on plant and root growth, yield, and production efficiency of fresh-market tomato. The study demonstrated that deficit irrigation (DI) targeting 66% daily evapotranspiration (ET) replacement significantly increased tomato root growth compared with full irrigation (FI) at 100% ET. Similarly, DI application increased tomato growth early in the season compared with FI. Therefore, irrigation applications may be adjusted downward from FI, especially early during a wet season, thereby potentially improving irrigation water use efficiency (iWUE) and reducing leaching potential of Florida sandy soils. However, total marketable yield significantly increased under FI compared with DI. This suggests that although DI may increase early plant growth, the application of DI throughout the season may result in yield reduction. Although N application rates had no significant effects on biomass production, tomato marketable yield with an application rate of 134 kg·ha−1 N was significantly lower compared with other N application rates (179, 224, and 269 kg·ha−1). It was also observed that there were no significant yield benefits with N application rates higher than 179 kg·ha−1. During the fall, iWUE was higher under DI (33.57 kg·m−3) than under FI (25.57 kg·m−3); however, iWUE was similar for both irrigation treatments during spring (FI = 14.04 kg·m−3; DI = 15.29 kg·m−3). The N recovery (REC-N) rate was highest with 134 kg·ha−1 N; however, REC-N was similar with 179, 224, and 269 kg·ha−1 N rates during both fall and spring. Therefore, these study results could suggest that DI could be beneficial to tomato production only when applied during early growth stages, but not throughout the growing season. Both yield and efficiency results indicated that the optimum N requirement for open-field fresh-market tomato production in Florida may not exceed 179 kg·ha−1 N.

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Section: Stage Descriptionmentioning

confidence: 99%

Section: Stage Descriptionmentioning

confidence: 99%

Tomato Growth, Yield, and Root Development, Soil Nitrogen and Water Distribution as Affected by Nitrogen and Irrigation Rates on a Florida Sandy Soil

Ayankojo¹,

Morgan²,

Kadyampakeni³

et al. 2020

horts

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“…Secondly, in addition to the changes in plant community composition, there are also some known mechanisms of plant acclimation (e.g. Vincent et al, 2020) that could explain why these four parameters might plausibly take different values at the two sites. Finally, the effects on these four model parameters on the model outputs are unlikely to be strongly correlated with one another.…”

Section: Sensitivity and Uncertainty Analysismentioning

confidence: 99%

“…In this respect, plants are known to acclimatize to environmental stresses at a range of time-scales by various physiological and morphological mechanisms (e.g. Maseda and Fernández, 2006 Manzoni et al, 2013;Bartlett et al, 2014;Tardieu et al, 2018;Vincent et al, 2020).…”

Section: Acceptable Parameter Valuesmentioning

confidence: 99%

Coupled modelling of hydrological processes and grassland production in two contrasting climates

Jarvis

Groh

Lewan

et al. 2021

Preprint

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Abstract. Projections of global climate models suggest that ongoing human-induced climate change will lead to an increase in the frequency of severe droughts in many important agricultural regions of the world. Eco-hydrological models that integrate current understanding of the interacting processes governing soil water balance and plant growth may be useful tools to predict the impacts of climate change on crop production. However, the validation status of these models for making predictions under climate change is still unclear, since few suitable datasets are available for model testing. One promising approach is to test models using data obtained in “space-for-time” substitution experiments, in which samples are transferred among locations with contrasting current climates in order to mimic future climatic conditions. An important advantage of this approach is that the soil type is the same, so that differences in soil properties are not confounded with the influence of climate on water balance and crop growth. In this study, we evaluate the capability of a relatively simple eco-hydrological model to reproduce 6 years (2013–2018) of measurements of soil water contents, water balance components and grass production made in weighing lysimeters located at two sites within the TERENO-SoilCan network in Germany. Three lysimeters are located at an upland site at Rollesbroich with a cool, wet climate, while three others had been moved from Rollesbroich to a warmer and drier climate on the lower Rhine valley floodplain at Selhausen. Four of the most sensitive parameters in the model were treated as uncertain within the framework of the GLUE (Generalized Likelihood Uncertainty Estimation) methodology, while the remaining parameters in the model were set according to site measurements or data in the literature. The model accurately reproduced the measurements at both sites, and some significant differences in the posterior ranges of the four uncertain parameters were found. In particular, the results indicated greater stomatal conductance as well an increase in dry matter allocation below-ground and a significantly larger maximum root depth for the three lysimeters that had been moved to Selhausen. As a consequence, the apparent water use efficiency (above-ground harvest divided by evapotranspiration) was significantly smaller at Selhausen than Rollesbroich. Data on species abundance on the lysimeters provide one possible explanation for the differences in the plant traits at the two sites derived from model calibration. These observations showed that the plant community at Selhausen had changed significantly in response to the drier climate, with a significant decrease in the abundance of herbs and an increase in the proportion of grass species. The differences in root depth and leaf conductance may also be a consequence of plasticity or acclimation at the species level. Regardless of the reason, we may conclude that such adaptations introduce significant additional uncertainties into model predictions of water balance and plant growth in response to climate change.

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“…Most citrus cultivars are highly sensitive to salt [ 5 ], and the commonly grown ‘Valencia’ sweet orange ( Citrus × sinensis (L.) Osbeck) had decreased rind thickness, delayed maturation, and reduced yields when grown in a saline environment [ 5 , 6 , 7 , 8 , 9 ]. Thus, developing new rootstock and scion varieties, either through conventional breeding or genetic transformation, that possess superior abiotic and biotic stress tolerance-specific traits is imperative for maintaining sustainable citriculture [ 10 , 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Physiological Responses and Gene Expression Patterns in Open-Pollinated Seedlings of a Pummelo-Mandarin Hybrid Rootstock Exposed to Salt Stress and Huanglongbing

Mahmoud

Huyck

Vincent

et al. 2021

Plants

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Huanglongbing (HLB), caused by the phloem-limited bacterium Candidatus Liberibacter asiaticus (CaLas), is the primary biotic stress causing significant economic damage to the global citrus industry. Among the abiotic stresses, salinity affects citrus production worldwide, especially in arid and coastal regions. In this study, we evaluated open-pollinated seedlings of the S10 (a diploid rootstock produced from a cross between two siblings of the Hirado Buntan Pink pummelo (Citrus maxima (Burm.) Merr.) with the Shekwasha mandarin (Citrus reticulata Blanco)) for their ability to tolerate HLB and salinity stresses. In a greenhouse study, ‘Valencia’ sweet orange (either HLB-positive or negative) was grafted onto six clonally propagated lines generated from the screened seedlings in the greenhouse and the trees were irrigated with 150 mM NaCl after eight months of successful grafting and detection of CaLas in the leaf petioles. Cleopatra mandarin was used as a salt-tolerant and HLB-sensitive rootstock control. CaLas infection was monitored using a quantitative polymerase chain reaction before and after NaCl treatments. Following three months of NaCl treatment, ‘Valencia’ leaves on the S10 rootstock seedlings recorded lower levels of chlorophyll content compared to Cleopatra under similar conditions. Malondialdehyde content was higher in HLB-infected ‘Valencia’ grafted onto Cleopatra than in the S10 lines. Several plant defense-related genes were significantly upregulated in the S10 lines. Antioxidant and Na+ co-transporter genes were differentially regulated in these lines. Based on our results, selected S10 lines have potential as salt-tolerant rootstocks of ‘Valencia’ sweet orange under endemic HLB conditions. However, it is necessary to propagate selected lines through tissue culture or cuttings because of the high percentage of zygotic seedlings derived from S10.

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Primed acclimation: A physiological process offers a strategy for more resilient and irrigation-efficient crop production

Cited by 31 publications

References 133 publications

Tomato Growth, Yield, and Root Development, Soil Nitrogen and Water Distribution as Affected by Nitrogen and Irrigation Rates on a Florida Sandy Soil

Tomato Growth, Yield, and Root Development, Soil Nitrogen and Water Distribution as Affected by Nitrogen and Irrigation Rates on a Florida Sandy Soil

Coupled modelling of hydrological processes and grassland production in two contrasting climates

Physiological Responses and Gene Expression Patterns in Open-Pollinated Seedlings of a Pummelo-Mandarin Hybrid Rootstock Exposed to Salt Stress and Huanglongbing

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