Nutrient uptake, cluster root formation and exudation of protons and citrate in Lupinus albus as affected by localized supply of phosphorus in a split-root system

Shen, Jianbo; Li, H.; Neumann, Günter; Zhang, F.

doi:10.1016/j.plantsci.2004.10.017

Cited by 122 publications

(82 citation statements)

References 34 publications

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“…Supply of optimal phosphorus also ensured that the plants inhibited the formation of excess roots that would have led to the excessive loss of carbon from the plants rooting system and reducing the efficiency in energy production (Shane & Lambers 2005). Several investigators have reported the same findings that either initiation or inhibition of root formation is linked to internal P concentration, uptake and availability in the soil and significantly influences the productivity of crops (Li & Liang 2005, Shen et al 2005. Alam et al (2003) also reported similar findings that the application of phosphorus fertilizer (SSP) to wheat crop significantly increased the grain yield as well as P-uptake over control.…”

Section: Discussionmentioning

confidence: 89%

“…Pearse et al (2006) also introduced a model that roots in some varieties have a positive effect on P uptake, which enhances P status and efficiency. Different varieties have inherent differences in the maximum growth rate and P uptake which leads them to differ in their productivity (Shen et al 2005). Ren et al (2007) also found that different species of ryegrass with inherent low growth rates accumulated higher levels of phosphorus in their shoots at low P-levels which led to lower grain yields probably due to reduced efficiency of P for grain filling.…”

Section: Discussionmentioning

confidence: 99%

“…Organic forms of P are found in humus and other organic material (Masinde et al 2009). Phosphorus in organic material is released by a mineralization process involving soil organisms (Shen et al 2005) and thus the increased growth on the control as that of mildly P applied treatment. The increase in grain yield was probably due to the positive influence of phosphorus in initiation and growth of roots that in turn sped up and increased the uptake of essential elements and moisture from the soil.…”

Section: Discussionmentioning

confidence: 99%

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Finger millet (Eleusine coracana L.) grain yield and yield components as influenced by phosphorus application and variety in Western Kenya

Wafula¹,

Nicholas²,

Henry³

et al. 2016

Trop. Plant Res.

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Abstract:Finger millet is one of the potential cereal crops that can contribute to the efforts of realization of food security in the Sub-Saharan Africa. However, scientific information available with regards to improving soil phosphorus supply and identification of P efficient varieties for the crops potential yield is limited. In order to investigate the effects of P levels on yield components and grain yield On-station field experiments were conducted in two sites of western Kenya during the long and short rain seasons of 2015. The experiment was laid out in a Randomized Complete Block Design in factorial arrangement with four levels of P (0, 12.5, 25 and 37.5 kg P 2 O 5 ha -1 and three finger millet varieties (U-15, P-224 and a local check-Ikhulule) and the treatments replicated three times. The increase of phosphorus levels significantly (P≤0.05) increased the grain yield over the control up to 25 kg P 2 O 5 ha -1 during the long rain seasons and 25 kg P 2 O 5 ha -1 during the short rain seasons in both sites. Interactions at P≤0.05 were revealed on the grain yield where improved variety P-224 at 25 kg P 2 O 5 ha -1 produced the highest grain yield of 4.74 t.ha -1 in Alupe and 4.77 t.ha -1 in Kakamega and the consistent results suggest that the combination is highly recommended. Therefore the use of judicious and proper rates of P fertilizers can markedly increase the grain yield of finger millet in western Kenya.

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Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Finger millet (Eleusine coracana L.) grain yield and yield components as influenced by phosphorus application and variety in Western Kenya

Wafula¹,

Nicholas²,

Henry³

et al. 2016

Trop. Plant Res.

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“…One of these non-mycorrhizal, cluster-root producing plants, is white lupin (Lupinus albus (L.)). White lupin's ability to grow on soils where P is present in sparingly soluble forms has been studied intensively for the last 20 years (Gardner et al 1982(Gardner et al , 1983Neumann et al 1999;Shane et al 2003;Shen et al 2005;Weisskopf et al 2005Weisskopf et al , 2006a. Furthermore, as a leguminous plant, white lupin has the ability to enrich the soil in nitrogen (N) through symbiotic fixation.…”

Section: Introductionmentioning

confidence: 99%

White lupin leads to increased maize yield through a soil fertility-independent mechanism: a new candidate for fighting Striga hermonthica infestation?

et al. 2008

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Nitrogen (N)-deficiency and lack of phosphorus (P) availability are major constraints to maize yields in Western Kenya. In a two-season field study in the lake Victoria basin, we tested the capacity of white lupin (Lupinus albus (L.), cv. Ultra), as a nitrogenfixing crop with a highly efficient P-acquisition capacity, to increase maize yields when used as a companion or cover crop, or as a source of organic matter. Each experiment was performed on three different fields (Vertisols) differing in N/P availability, previous cropping history and in levels of infestation by the parasitic weed Striga hermonthica (Del.) Benth. Our results show that white lupin led to significantly higher yields of maize when used as a cover crop. When lupin was grown as a companion crop, it also slightly enhanced the yield of the co-cultivated maize. When lupin shoots were incorporated to the soil, the positive effect of lupin on maize growth was field-dependent and only occurred in the field most heavily infested with S. hermonthica. Despite the beneficial impact on maize yield, no clear effect of lupin on soil N and P availability or on maize N/P uptake were observed. In contrast, lupin significantly inhibited infestation of maize by S. hermonthica: when lupin was grown together with maize in pots inoculated with S. hermonthica, the emergence of the weed was strongly reduced compared to the pots with maize only. This work opens a new range of questions for further research on white lupin and its potential beneficial impact as a S. hermonthica-inhibiting crop.

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“…Those steps might include modifications to root growth and architecture (Williamson et al, 2001;Chevalier et al, 2003;Lambers et al, 2006;Li et al, 2012b), formation of proteoid roots (Watt and Evans, 1999), secretion of organic acids (Shen et al, 2005), induction of acid phosphatases (Baldwin et al, 2001;Miller et al, 2001), or activation of Pi starvation-response genes (Wu et al, 2003;Franco-Zorrilla et al, 2004). This last phenomenon seems to be essential and universal within all organisms (Rubio et al, 2001;Hammond et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

GmPTF1, a novel transcription factor gene, is involved in conferring soybean tolerance to phosphate starvation

Li¹,

Wu²,

Kong³

et al. 2014

Genet. Mol. Res.

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ABSTRACT. Phosphorus plays a pivotal role in plant growth and development. In this study, we isolated and characterized GmPTF1, a basic helix-loop-helix (bHLH) transcription factor (TF) gene from soybean (Glycine max) with tolerance to inorganic phosphate (Pi) starvation. Alignment analysis indicated that GmPTF1 and other reported bHLH TFs share significant similarity in the region of the bHLH domain. As with OsPTF1 and other homologous Pi starvationrelated bHLH TFs (His-5, Glu-9, Arg-12, and Arg-13), all recognition motifs for the G-box (CACGTG) were present in the GmPTF1 domain. Prokaryotic expression in Escherichia coli strain BL21 (DE3) plysS showed that a novel 40-kDa polypeptide was expressed when cells containing GmPTF1 were induced. The subcellular localization in cells from onion epidermis and Arabidopsis roots demonstrated that the GmPTF1 protein was found in the nucleus. Furthermore, analysis of transcription activity in yeast revealed that full-length GmPTF1 and its N-terminal and C-terminal domains could activate the histidine, adenine, and uracil reporter genes. This suggested that the N-terminal GmPTF1 has a role for tolerance to phosphate starvation and C-terminal peptides of GmPTF1 act as transcriptional activators. When real-time quantitative polymerase chain reaction was performed, the expression of GmPTF1 under conditions of phosphate starvation was significantly induced in soybean roots of the low-Pi-tolerant variety ZH15. Moreover, the relative level of expression was much higher there than in roots of the sensitive variety NMH from days 7 to 56 of low-Pi stress. These results imply that GmPTF1 is involved in conferring tolerance to phosphate starvation in soybean.

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Nutrient uptake, cluster root formation and exudation of protons and citrate in Lupinus albus as affected by localized supply of phosphorus in a split-root system

Cited by 122 publications

References 34 publications

Finger millet (Eleusine coracana L.) grain yield and yield components as influenced by phosphorus application and variety in Western Kenya

Finger millet (Eleusine coracana L.) grain yield and yield components as influenced by phosphorus application and variety in Western Kenya

White lupin leads to increased maize yield through a soil fertility-independent mechanism: a new candidate for fighting Striga hermonthica infestation?

GmPTF1, a novel transcription factor gene, is involved in conferring soybean tolerance to phosphate starvation

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