Genotypic differences in phosphorus acquisition efficiency and root performance of cotton (Gossypium hirsutum) under low-phosphorus stress

BoLang, Chen; Wang, Qinghui; Bücking, Heike; Sheng, Jiandong; Luo, Jiafa; Chai, Zhixin; Kafle, Arjun; Hou, Yinying; Feng, Gu

doi:10.1071/cp18324

Cited by 25 publications

(20 citation statements)

References 52 publications

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“…Lentil genotypes differed for their reaction to the P de cit mediums. Various crops showed variation for their reaction to P, wheat [47][48], oats, barley, triticale and rye [49], maize [50], cotton [51][52], groundnut [53], brassica [54], soybean [55], faba bean [56], common bean [57], lentil [58], and the mungbean [59]. Many studies routinely used targeting to few measures of P-use e ciency [60] and other studies targeted speci c root architectural traits [61] and while another vital trait root hair formation was also considered [62].…”

Section: Discussionmentioning

confidence: 99%

WITHDRAWN: Effectiveness of the Classification for the Phosphorus Use Efficiency Traits at the Seedling Stage in Lentil

Rai

et al. 2020

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Background: Understanding the morphology of the root system in lentils is critical for the identification of root characteristics for breeding cultivars with enhanced phosphorus use efficiency (PUE) to better adapt to poor P environments. PUE and variability in root morphological characteristics at the early vegetative stage were investigated among 40 indigenous and exotic lentil genotypes in a hydroponic phenotyping system.Results: A prerequisite for developing P-efficient crop cultivars is to categorise existing germplasm. In this experiment, 40 lentil genotypes were grown for 24 days under P deficit (3 μm KH2PO4) and P adequate (250 μm KH2PO4) conditions in hydroponics. Lentil genotypes exhibited significant variability for root, biomass, and P efficiency traits. Different techniques have identified various genotypes of lentils based on the efficiency of phosphorus uptake (PUPE) and the efficiency of phosphorus utilization (PUTE). IG 568229 showed the highest PUPE, while the wild ILWL-15 lentil showed the lowest PUPE in both media. The wild lentil ILWL-95 showed maximum PUTE under P adequate medium. The IC 560135, IG 334, IG 560157 and IG 568229 genotypes were found to be highly efficient at both P levels and to be ideal for a large range of P levels without having a drastic impact on biomass output.Conclusions: The primary step for breeding more P-efficient crop plants is the classification of the germplasm. IC 560135 and IC 268238 contrasting lentil lines may be useful for mapping population development, mapping and tagging of gene(s), QTLs for PUE in lentil. These efficient P crops also ensure food and nutritional security, in addition to reducing the cost of cultivation.

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Section: Discussionmentioning

confidence: 99%

WITHDRAWN: Effectiveness of the Classification for the Phosphorus Use Efficiency Traits at the Seedling Stage in Lentil

Rai

et al. 2020

Preprint

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“…Cotton is an important fiber crop grown worldwide [1] in arid and semi-arid regions [2]. However, arid and semi-arid regions face major issues, including low nutrient availability, especially nutrients with low diffusion coefficients, such as phosphorus (P) [3].…”

Section: Introductionmentioning

confidence: 99%

Genotypic Variation in Cotton Genotypes for Phosphorus-Use Efficiency

et al. 2019

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Low phosphorus (P) availability is a major constraint for cotton production. Consequently, P-efficient genotypes can improve productivity under conditions where the higher application of P is not economical. This study was conducted to characterize cotton genotypes for P-use efficiency under various P concentrations (0, 10, 20, 40, 80, and 500 μM KH2PO4). The results showed large genotypic variation in five selected traits, such as root dry weight, shoot dry weight, photosynthetic activity, P-utilization efficiency, and P-uptake efficiency. Based on these five selected traits, the genotypes were grouped into three main classes as efficient, moderate efficient, and inefficient genotypes as proposed by different researchers. Most of the genotypes behaved in a similar pattern under different P concentrations. Among the genotypes, Xinluzao-49 and Xinluzao-48 were considered as P efficient while CCRI-64 and Yumian-21 as inefficient genotypes. However, the rest of the genotypes were considered as moderately P efficient. The results prove that a large genetic potential exists in cotton genotypes for P-use efficiency, and the use of P-efficient genotypes for cultivation will reduce the application of phosphatic fertilizers. Furthermore, the use of P-efficient genotypes will improve cotton breeding activities and help in improving the environmental sustainability of cotton production.

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“…Cotton plants with thicker roots (and with more mycorrhizal collaboration) not only acquired more P, but other studies have shown that cotton plants with thicker roots are more tolerant of drought (McMichael et al 1985) and have higher levels of mycorrhizal colonization, contributing to alleviation of salinity stress (Liu et al 2016). One possible explanation for breeding for thinner roots could be that in hydroponic systems cotton plants with thinner roots and higher SRL were more P-e cient (Chen et al 2019). Martin-Robles et al (2019) compared thirty domesticated pants with their wild progenitors.…”

Section: Mycorrhizal Bene Ts Of Cotton Plantsmentioning

confidence: 99%

“…In agreement with this, Damodaran et al (2012) noted for cotton cultivars a high mycorrhizal responsiveness. When testing different cotton varieties for P acquisition e ciency in a hydroponic system, Chen et al (2019) noted that at low P supply both ne-root ratio and speci c root length were positively correlated with P acquisition e ciency, suggesting higher e ciency of varieties with thinner roots. It is not known how cotton breeding during the last decades has affected its ability to acquire P directly and via the AMF pathway.…”

Section: Introductionmentioning

confidence: 99%

Breeding against mycorrhizal symbiosis: modern cotton (Gossypium hirsutum L.) varieties perform more poorly than older varieties except at very high phosphorus supply

Wang

Zhang

Sheng

et al. 2021

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Background and aims Cotton (Gossypium hirsutum L.) is an important cash fiber crop species, but its root traits related to phosphorus (P) acquisition have been poorly understood. Methods Eight cotton varieties that were released between 1950 and 2013 were grown in pots with or without arbuscular mycorrhizal fungi (AMF) at three P supply levels. Eleven root traits were measured and calculated after seven weeks of growth. Results At the lower two P levels mycorrhizal plants acquired more P and produced more biomass than non-mycorrhizal plants. At the highest P level mycorrhizal plants took up more P than non-mycorrhizal plants, but there was no difference in biomass. At the intermediate P level, root diameter was significantly positively correlated with biomass, P concentration and P content of mycorrhizal plants. More recent accessions had smaller root diameters, acquired less P and obtained less biomass, indicating (inadvertent) varietal selection for thinner roots that provided less cortical space for AMF, which increased the need for high P fertilizer. Conclusion Our study provides support for the importance of the outsourcing model of nutrient acquisition in the root economics space framework. Inadvertent varietal selection in the last decades, resulting in thinner roots and a lower benefit from mycorrhizal colonization, has caused a lower productivity of cotton varieties at moderate P supply, indicating the need to rethink cotton breeding efforts in order to achieve agricultural sustainability.

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Genotypic differences in phosphorus acquisition efficiency and root performance of cotton (Gossypium hirsutum) under low-phosphorus stress

Cited by 25 publications

References 52 publications

WITHDRAWN: Effectiveness of the Classification for the Phosphorus Use Efficiency Traits at the Seedling Stage in Lentil

WITHDRAWN: Effectiveness of the Classification for the Phosphorus Use Efficiency Traits at the Seedling Stage in Lentil

Genotypic Variation in Cotton Genotypes for Phosphorus-Use Efficiency

Breeding against mycorrhizal symbiosis: modern cotton (Gossypium hirsutum L.) varieties perform more poorly than older varieties except at very high phosphorus supply

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