Boron mobility in plants

Brown, Patrick H.; Shelp, Barry J.

doi:10.1007/978-94-011-5580-9_7

Cited by 183 publications

(279 citation statements)

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“…The mobility of B in plant tissues is generally considered as intermediate (White, 2012). However, it seems that B mobility greatly depends on plant species and cultivars (Brown and Shelp, 1997). Peuke (2009) reported changes in boron leaves similar to that observed to N during the growing season.…”

Section: Discussionmentioning

confidence: 87%

Guidelines for fertilizer use in vineyards based on nutrient content of grapevine parts

Arrobas

Ferreira

Freitas

et al. 2014

Scientia Horticulturae

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a b s t r a c tPlant analysis plays a major role in fertilizer recommendations for perennial tree crops and vines. Plant analysis, however, does not quantify the rate of nutrients to apply. The approach developed in this work takes into account the content of the nutrients in grapevine parts and their dynamic within the plant to assist in the estimation of the amount of fertilizer to apply. Groups of three vines were cut at ground level on four different dates from September 14th to November 28th. On the first sampling date the vines were separated into trunk, cordons, canes, leaves and clusters for determination of dry matter content and elemental composition. On the following dates the vines were separated into the plant parts that were still present, since the clusters were only present on the first sampling date and the leaves on the first two. To assess the mobility of nutrients within the plant, samples of phloem vessels and sawdust of the entire trunk were taken as well as samples of chlorotic and green leaves. Nitrogen (N), potassium (K), phosphorus (P) and boron (B) showed mobility within the plant whereas calcium (Ca) and magnesium (Mg) did not. The removal of nutrients in clusters is critical for estimating N and K fertilizer rates. Clusters removed 19.9 kg N ha −1 and 28.7 kg K ha −1 . In the case of N, it is also important to assess the system's ability to recycle the nutrient contained in the leaves and canes which amounted to 49.4 kg N ha −1 . Phosphorus, calcium and magnesium applications might not justify being taken into account in the annual fertilization plan. Thus, the establishment of the fertilization programme should be a nutrient-specific exercise which takes into account all sources of information, including target yield and nutrient content in clusters, the vineyard management strategies influencing nutrient use efficiency from fallen leaves and prunings and soil testing and plant analysis.

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Section: Discussionmentioning

confidence: 87%

Guidelines for fertilizer use in vineyards based on nutrient content of grapevine parts

Arrobas

Ferreira

Freitas

et al. 2014

Scientia Horticulturae

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“…After B uptake into root cells and loading into the xylem, the transport of B from root to shoot is largely driven by transpiration in the leaves, and the distribution of B in the shoot follows the gradient of transpiration rate in leaves of different age (Brown and Shelp, 1997;Huang et al, 2001). Partitioning of B into the immature leaves (or enclosed ears in the case of cereal species) faces a strong competition from the sink-strength of mature leaves that have much higher transpiration activity (Huang et al, 2001).…”

Section: Stomatal Response and B Partitioningmentioning

confidence: 99%

“…Because in most crop species, B is passively taken up by roots, transported in the xylem and deposited towards sinks with the highest transpiration rate (Brown and Shelp, 1997;Hu and Brown, 1997), chilling effects on root water absorption and hydraulic conductance in roots and shoots may suppress root B uptake and transport, and alter B partitioning into new shoot growth (as observed by Ye et al, 2000Ye et al, , 2003. Molecular approaches may be applied to reveal primary events involved in the complex interaction between chilling temperature and B deficiency on the activity and abundance of water channels, root hydraulic conductance and B absorption.…”

Section: On C L Ud I N G R E M a R K S A N D Fie Ld Imp Licationsmentioning

confidence: 99%

“…Murata and Nishiyama, 1998;Melis, 1999;Kratsch and Wise, 2000;Allen and Ort, 2001;Browse and Xin, 2001). Comparatively recent research findings have also greatly improved our understanding of B uptake and transport processes (Brown and Shelp, 1997;Hu and Brown, 1997;Blevins and Lukaszewski, 1998;Brown et al, 2002a;Frömmer and von Wiren, 2002;Takano et al, 2002) and B roles in cell wall formation, cellular membrane functions and anti-oxidation defence systems (Cakmak and Römheld, 1997;Matoh, 1997;Goldbach et al, 2002). However, much remains to be understood about how B nutrition modulates plant chilling tolerance and how chilling tolerance affects plant responses to low/deficient B supply, particularly at the cellular level.…”

Section: Introductionmentioning

confidence: 98%

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Boron Nutrition and Chilling Tolerance of Warm Climate Crop Species

Huang¹,

Ye²,

Bell³

et al. 2005

Annals of Botany

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Background Field observations and glasshouse studies have suggested links between boron (B)-deficiency and leaf damage induced by low temperature in crop plants, but causal relationships between these two stresses at physiological, biochemical and molecular levels have yet to be explored. Limited evidence at the whole-plant level suggests that chilling temperature in the root zone restricts B uptake capacity and/or B distribution/utilization efficiency in the shoot, but the nature of this interaction depends on chilling tolerance of species concerned, the mode of low temperature treatment (abrupt versus gradual temperature decline) and growth conditions (e.g. photon flux density and relative humidity) that may exacerbate chilling stress.Scope This review explores roles of B nutrition in chilling tolerance of continual root or transient shoot chills in crop species adapted to warm season conditions. It reviews current research on combined effects of chilling temperature (ranging from >0 to 20 C) and B deficiency on growth and B nutrition responses in crop species differing in chilling tolerance.Conclusion For subtropical/tropical species (e.g. cucumber, cassava, sunflower), root chilling at 10-17 C decreases B uptake efficiency and B utilization in the shoot and increases the shoot : root ratio, but chilling-tolerant temperate species (e.g. oilseed rape, wheat) require much lower root chill temperatures (2-5 C) to achieve the same responses. Boron deficiency exacerbates chilling injuries in leaf tissues, particularly under high photon flux density. Suggested mechanisms for B · chilling interactions in plants are: (a) chilling-induced reduction in plasmalemma hydraulic conductivity, membrane fluidity, water channel activity and root pressure, which contribute to the decrease in root hydraulic conductance, water uptake and associated B uptake; (b) chilling-induced stomatal dysfunction affecting B transport from root to shoot and B partitioning in the shoot; and (c) B deficiency induced sensitivity to photo-oxidative damage in leaf cells. However, specific evidence for each of the mechanisms is still lacking. Impacts of B status on chilling tolerance in crop species have important implications for the management of B supply during sensitive stages of growth, such as early growth after planting and early reproductive development, both of which can coincide with the occurrence of chilling temperatures in the field.

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“…20, 2018; transport, B is present at neutral pH primarily as boric acid, which can be transported along with 317 the borate anion (Woods, 1996). However, B can be more readily transported as a B-polyol 318 complex (Brown and Shelp, 1997). It is thought that species that produce polyols (e.g., sugar 319 alcohols such as sorbitol and mannitol) may display greater B mobility within the plant, in 320 particular in the phloem, and may explain the large variation in B mobility among species that 321 has been noted.…”

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confidence: 99%

Increased temperatures may safeguard the nutritional quality of crops under future elevated CO₂ concentrations

Koehler

Bernacchi

Baxter

2018

Preprint

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2 Summary (244/250 words) 17Iron (Fe) and zinc (Zn) deficiencies are a global human health problem that may worsen 18 by growth of crops at elevated atmospheric CO2 concentration (eCO2). However, climate change 19 will also involve higher temperature, but it is unclear how the combined effect of eCO2 and 20 higher temperature will affect the nutritional quality of food crops. To begin to address this 21 question, we grew soybean (Glycine max) in a Temperature by Free-Air CO2 Enrichment (T-22 FACE) experiment in 2014 and 2015 under ambient (400 µmol mol -1 ) and elevated (600 µmol 23 mol -1 ) CO2 concentration and under ambient and elevated temperatures (+2.7 °C day and +3.4 °C 24 at night). In our study, eCO2 significantly decreased Fe concentration in soybean seeds in both 25seasons (-8.7% and -7.7%) and Zn concentration in one season (-8.9%) while higher temperature 26 (at ambient CO2 concentration) had the opposite effect. The combination of eCO2 with elevated 27 temperature generally restored seed Fe and Zn concentrations to levels obtained under ambient 28 CO2 and temperature conditions, suggesting that the potential threat to human nutrition by 29 increasing CO2 concentration may not be realized. In general, seed Fe concentration was 30 negatively correlated with yield suggesting inherent limitations to increasing seed Fe. In 31 addition, we confirm our previous report that the concentration of seed storage products and 32 several minerals varies with node position at which the seeds developed. Overall, these results 33 demonstrate the complexity of predicting climate change effects on food security when various 34 environmental parameters change in an interactive manner. 35

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Boron mobility in plants

Cited by 183 publications

References 58 publications

Guidelines for fertilizer use in vineyards based on nutrient content of grapevine parts

Guidelines for fertilizer use in vineyards based on nutrient content of grapevine parts

Boron Nutrition and Chilling Tolerance of Warm Climate Crop Species

Increased temperatures may safeguard the nutritional quality of crops under future elevated CO₂ concentrations

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Boron mobility in plants

Cited by 183 publications

References 58 publications

Guidelines for fertilizer use in vineyards based on nutrient content of grapevine parts

Guidelines for fertilizer use in vineyards based on nutrient content of grapevine parts

Boron Nutrition and Chilling Tolerance of Warm Climate Crop Species

Increased temperatures may safeguard the nutritional quality of crops under future elevated CO2 concentrations

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Product

Resources

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Increased temperatures may safeguard the nutritional quality of crops under future elevated CO₂ concentrations