Leaf initiation and development in soybean under phosphorus stress

Chiera, Joseph M.; Thomas, Judith F.; Rufty, Thomas W.

doi:10.1093/jexbot/53.368.473

Cited by 87 publications

(73 citation statements)

References 14 publications

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“…This has also been confirmed in brassicas (Hammond et al 2009) and demonstrated for production of lateral roots (Zhu and Lynch 2004). Leaf growth depression under phosphorus deficiency is also well documented (Chiera et al 2002, Assuero et al 2004, Kavanová et al 2006.…”

Section: Resultsmentioning

confidence: 62%

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Anatomical changes of lentil (Lens culinaris Medik.) under phosphorus deficiency stress

Sarker¹,

Rashid

Jarmoker

2015

Bangladesh J. Bot.

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Phosphorus deficiency in lentil (Lens culinaris Medik.) resulted in the development of abundant long root hairs which were rudimentary in plants fed with phosphorus. Root and stem diameter as well as thickness of leaf reduced under phosphorus deficiency. The cortical zone of the stem and root was found to decrease under phosphorus deficiency. Vascular area became smaller with less number of xylem vessels and smaller size of the cavity due to phosphorus deficiency. The pith area was increased in the stem under phosphorus deficient condition.

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Section: Resultsmentioning

confidence: 62%

“…3B). Chiera et al (2002) showed that the cell size and thickness of epidermal cell were decreased under phosphorus deficient conditions in soybean leaf. In +P plant, cuticle was thinner than that of -P plant.…”

Section: Resultsmentioning

confidence: 99%

Anatomical changes of lentil (Lens culinaris Medik.) under phosphorus deficiency stress

Sarker¹,

Rashid

Jarmoker

2015

Bangladesh J. Bot.

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“…One of the most striking effect of P deficiency is a reduction in leaf growth both in terms of leaf number and individual leaf size (Lynch et al, 1991;Chiera et al, 2002). Leaf initiation at the shoot meristem and its lateral expansion are controlled by the activities of cell division (Chiera et al, 2002;Assuero et al, 2004).…”

Section: Maintenance Of Cell-division and Epidermal Cell Expansionmentioning

confidence: 99%

“…Leaf initiation at the shoot meristem and its lateral expansion are controlled by the activities of cell division (Chiera et al, 2002;Assuero et al, 2004). Pi was reported to play a significant role in cell division activities (Sano et al, 1999).…”

Section: Maintenance Of Cell-division and Epidermal Cell Expansionmentioning

confidence: 99%

“…Pi was reported to play a significant role in cell division activities (Sano et al, 1999). However, plants may still differ in tolerance of P stress effect on leave growth mainly due to difference in the ability to maintain cell division (Chiera et al, 2002;Assuero et al, 2004), leaf epidermal cell expansion (Radin and Eidenbock, 1984) or both (Kavanova et al, 2006), under lower tissue P concentration. Alternatively, plants may also retranslocate limited P from older leaves to younger leaves to maintain Pi at levels that permit optimal physiological activities including cell division (Plaxton and Carswell, 1999;Akhtar et al, 2008).…”

Section: Maintenance Of Cell-division and Epidermal Cell Expansionmentioning

confidence: 99%

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Management of soil phosphorus and plant adaptation mechanisms to phosphorus stress for sustainable crop production: a review

Balemi

Negisho

2012

J. Soil Sci. Plant Nutr.

212

145

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Phosphorus is one of the seventeen essential nutrients required for plant growth. Despite its importance, it is limiting crop yield on more than 40% of the world's arable land. Moreover, global P reserves are being depleted at a higher rate and according to some estimates there will be no soil P reserve by the year 2050.This is a potential threat to sustainable crop production. Most of the P applied in the form of fertilizers may be adsorbed by the soil, and is not available for plants lacking specific adaptations. Available soil P and hence crop yield can, however, be increased through applying P containing fertilizers to feed the ever increasing world population. The P contained in crop residues if left in the field can be recycled by incorporating the residues into the soil whereas part of P in crop residues fed to livestock can be returned back to the soil in the form of manure and as bone meal. Additionally, plants have evolved a diverse array of strategies to obtain adequate P for their growth under P limiting conditions (a term called as P-efficiency mechanisms). Plant P-efficiency mechanisms include both improved uptake efficiency (the ability of a plant to take up more P under P limiting condition) and improved utilization efficiency (the ability of a plant to produce higher dry matter yield per unit P taken up). Uptake efficiency mechanisms include modification of root architecture, development of large root system, longer root hairs and thinner roots, exudation of low molecular weight organic acids, protons and enzymes such as phosphatases and phytases, association with mycorrhiza, production of cluster roots and expression of high affinity P transporters all of which contribute to increased P uptake efficiency of the plant. Other mechanisms include the use of alternative P-independent enzymes and glycolytic pathways, efficient cytoplasmic P homeostasis and higher ability to remobilize P from other plant parts all of which are part of enhanced P utilization efficiency. Traits related to the above morphological, physiological, biochemical and molecular adaptation mechanisms under P stress can be utilized in improving cultivated crops for P efficiency through breeding programs.

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Genotypic variation of potato for phosphorus efficiency and quantification of phosphorus uptake with respect to root characteristics

Balemi

2009

Z. Pflanzenernähr. Bodenk.

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Potato (Solanum tuberosum L.), an important food crop, generally requires a high amount of phosphate fertilizer for optimum growth and yield. One option to reduce the need of fertilizer is the use of P-efficient genotypes. Two efficient and two inefficient genotypes were investigated for P-efficiency mechanisms. The contribution of root traits to P uptake was quantified using a mechanistic simulation model. For all genotypes, high P supply increased the relative growth rate of shoot, shoot P concentration, and P-uptake rate of roots but decreased root-to-shoot ratio, root-hair length, and P-utilization efficiency. Genotypes CGN 17903 and CIP 384321.3 were clearly superior to genotypes CGN 22367 and CGN 18233 in terms of shoot-dry matter yield and relative shoot-growth rate at low P supply, and therefore can be considered as P-efficient. Phosphorus efficiency of genotype CGN 17903 was related to higher P-utilization efficiency and that of CIP 384321.3 to both higher P-uptake efficiency in terms of root-to-shoot ratio and intermediate P-utilization efficiency. Phosphorus-efficient genotypes exhibited longer root hairs compared to inefficient genotypes at both P levels. However, this did not significantly affect the uptake rate and the extension of the depletion zone around roots. The P inefficiency of CGN 18233 was related to low P-utilization efficiency and that of CGN 22367 to a combination of low P uptake and intermediate P-utilization efficiency. Simulation of P uptake revealed that no other P-mobilization mechanism was involved since predicted uptake approximated observed uptake indicating that the processes involved in P transport and morphological root characterstics affecting P uptake are well described.

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Leaf initiation and development in soybean under phosphorus stress

Cited by 87 publications

References 14 publications

Anatomical changes of lentil (Lens culinaris Medik.) under phosphorus deficiency stress

Anatomical changes of lentil (Lens culinaris Medik.) under phosphorus deficiency stress

Management of soil phosphorus and plant adaptation mechanisms to phosphorus stress for sustainable crop production: a review

Genotypic variation of potato for phosphorus efficiency and quantification of phosphorus uptake with respect to root characteristics

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