Evaluation of Calcium Regulating Roles of Guttation and Calcium Oxalate Crystals in Leaf Blades and Petioles of HydroponicallyGrown Eddo

Islam, Mohammad Nazrul; Kawasaki, Michio

doi:10.1626/pps.18.11

Cited by 9 publications

(4 citation statements)

References 37 publications

(34 reference statements)

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“…Plants try to allocate Ca 2+ and PO 4 3- to different cell types in order to avoid the formation and precipitation of Ca 3 (PO 4 ) 2 crystals and render Ca 2+ or PO 4 3- unavailable for metabolism and growth (Conn and Gilliham, 2010; Ding et al, 2018). However, when plants are grown under CaCl 2 salinity, Ca 2+ is present at excessive concentrations in almost all root and leaf tissues, and therefore, interacting with PO 4 3- or even oxalate, it is accumulated in crystals from which it will be released only when Ca 2+ levels will decrease, in order to buffer its biologically active levels in plants (Nazrul Islam and Kawasaki, 2015). Thus, the concentrations of available PO 4 3- tended to strongly decrease in C. citrinus leaves where the Ca 2+ concentration showed the highest increase compared to the respective control.…”

Section: Discussionmentioning

confidence: 99%

Biochemical, Physiological and Anatomical Mechanisms of Adaptation of Callistemon citrinus and Viburnum lucidum to NaCl and CaCl2 Salinization

et al. 2019

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Callistemon citrinus and Viburnum lucidum are appreciated and widespread ornamental shrubs for their abundant flowering and/or brilliant foliage. The intrinsic tolerance to drought/salinity supports their use in urban areas and in xeriscaping. Despite adaptive responses of these ornamental species to sodium chloride (NaCl) have been extensively explored, little is known on the effects of other salt solution, yet iso-osmotic, on their growth, mineral composition and metabolism. The present research was aimed to assess responses at the biochemical, physiological and anatomical levels to iso-osmotic salt solutions of NaCl and CaCl 2 to discriminate the effects of osmotic stress and ion toxicity. The two ornamental species developed different salt-tolerance mechanisms depending on the salinity sources. The growth parameters and biomass production decreased under salinization in both ornamental species, independently of the type of salt, with a detrimental effect of CaCl 2 on C. citrinus. The adaptive mechanisms adopted by the two ornamental species to counteract the NaCl salinity were similar, and the decline in growth was mostly related to stomatal limitations of net CO 2 assimilation rate, together with the reduction in leaf chlorophyll content (SPAD index). The stronger reduction of C. citrinus growth compared to V. lucidum , was due to an exacerbated reduction in net photosynthetic rate, driven by both stomatal and non stomatal limitations. In similar conditions, V. lucidum exhibited other additional adaptive response, such as modification in leaf functional anatomical traits, mostly related to the reduction in the stomata size allowing plants a better control of stomata opening than in C. citrinus . However, C. citrinus plants displayed an increased ability to retain higher Cl - levels in leaves than in roots under CaCl 2 salinity compared to V. lucidum , thus, indicating a further attempt to counteract chloride toxicity through an increased vacuolar compartmentalization and to take advantages of them as chip osmotica.

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Section: Discussionmentioning

confidence: 99%

Biochemical, Physiological and Anatomical Mechanisms of Adaptation of Callistemon citrinus and Viburnum lucidum to NaCl and CaCl2 Salinization

et al. 2019

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“…Some plants compartmentalize excess Zn into central vacuoles (Maeshima, 2001;Martinoia et al, 2007) and chloroplasts (Kim et al, 2009), and/or entrap free Zn in the cytoplasm using small cysteine-rich proteins and peptides (Clemens, 2001;Cobbett, 2000;Haydon & Cobbett, 2007). Guttation can facilitate the excretion of boron (B) in banana (Shapira et al, 2013), calcium (Ca) in eddo (Islam & Kawasaki, 2015), and arsenic in Pteris vittata fronds (Cantamessa et al, 2015) when those elements are present at excessive concentrations. Mizuno et al (2002) suggested that unbalanced elements could be excreted via guttation to adjust ion concentrations in Petasites japonicus var.…”

Section: Measurement Of Elemental Contents Of Leaf Blades Petioles mentioning

confidence: 99%

“…antiquorum Hubbard & Rehder] belongs to the taro group in the family Araceae and is cultivated mainly in Asia as a staple food. Guttation is an overnight process capable of exuding a considerable volume of fluid via hydathode pores and is a common phenomenon in eddo leaves (Hossain et al, 2016;Islam & Kawasaki, 2015). Hydathode pores are located on the adaxial surface of the leaf blade tip in eddo (Hossain et al, 2016).…”

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confidence: 99%

Hydathode function and changes in contents of elements in eddo exposed to zinc in hydroponic solution

Hossain

Sawada

Noda

et al. 2017

Plant Production Science

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“…在晶异细胞中 (Franceschi & Horner, 1980;Li et al, 2003;Mazen, 2004;徐静静等 , 2012;Islam & Kawasaki, 2015;Islam et al, 2018; 卫子皎等 , 2019)。处于高钙环境下的忍冬(Lonicera japonica)、华南忍冬(L. confusa)等植物还能通过表皮腺体和气孔将过多的钙以钙盐的形式排出体外 (Li et al, 2007;吴耿等, 2011;付嵘, 2019)。以上贮钙特性和排钙行为是植物适应高钙胁迫的重要生理策略 (Clark et al, 1987;Lersten & Horner, 2008), 对避免过高的Ca 2+ 浓度对植物正常生理代谢产生破坏和干扰具有重要作用 (He et al, 2014) 图1 喀斯特地区50株野生刺梨叶片中钙和镁的含量(平均值±标准差)。…”

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Calcium-tolerance type and adaptability to high-calcium habitats of <i>Rosa roxburghii</i>

MENG¹,

FAN²

2022

Chinese Journal of Plant Ecology

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Aims Rosa roxburghii is a special economic tree species native to southwest China, and it has been taken as a key fruit tree in karst mountainous areas of Guizhou Province. However, it is unclear whether R. roxburghii can adapt to high-calcium habitats in the karst areas. To provide scientific evidence for determining the potential planting sites of R. roxburghii, the calcium-tolerance type and adaptability to high-calcium habitats of R. roxburghii were needed to be clarified. Methods In this study, different organs from 50 R. roxburghii individuals and different calcareous soils where R. roxburghii grew were sampled in karst areas of Guizhou. The pH, exchangeable calcium and magnesium contents in the soil, total calcium and calcium oxalate contents in the plant organs, and calcium and magnesium contents in the leaves were determined, and the proportion of calcium oxalate in different organs to total calcium content was calculated. Then, the correlations between the exchangeable calcium and magnesium content in the soil with total calcium in different organs, and calcium and magnesium content in the leaves were analyzed. In addition, the distribution of calcium oxalate crystals in different organs as well as on the leaf surface was observed in samples collected from low-calcium and high-calcium habitats. Important findings The soil at R. roxburghii sites in karst areas had a high pH, and the content of exchangeable calcium and magnesium was abundant and varies greatly. In different calcareous habitats, the total calcium content in different organs of R. roxburghii was significantly and positively correlated with the exchangeable calcium content in the soil. Similarly, the contents of total calcium and magnesium in the leaves were correlated with those in the soil. The

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Evaluation of Calcium Regulating Roles of Guttation and Calcium Oxalate Crystals in Leaf Blades and Petioles of HydroponicallyGrown Eddo

Cited by 9 publications

References 37 publications

Biochemical, Physiological and Anatomical Mechanisms of Adaptation of Callistemon citrinus and Viburnum lucidum to NaCl and CaCl2 Salinization

Biochemical, Physiological and Anatomical Mechanisms of Adaptation of Callistemon citrinus and Viburnum lucidum to NaCl and CaCl2 Salinization

Hydathode function and changes in contents of elements in eddo exposed to zinc in hydroponic solution

Calcium-tolerance type and adaptability to high-calcium habitats of <i>Rosa roxburghii</i>

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