J Integr Plant Biol

Root architecture

Leon V. Kochian

2016, 58(3): 190-192. doi:10.1111/jipb.12471

摘要 ( 1456 )

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Improving crop nutrient efficiency through root architecture modifications

Xinxin Li, Rensen Zeng, and Hong Liao

2016, 58(3): 193-202. doi:10.1111/jipb.12434

摘要 ( 2599 )

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Root is essential for plant growth, nutrient and water acquisition and symbiosis with microflora in soils. Here, we summarized the recent advances in crop species' control of root architecture alterations in response to nutrient availability and root/microbe symbioses, through gene or QTL regulation, which results in enhanced nutrient efficiency.

Fine-tuning by strigolactones of root response to low phosphate

Yoram Kapulnik and Hinanit Koltai

2016, 58(3): 203-212. doi:10.1111/jipb.12454

摘要 ( 1564 )

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Strigolactones and auxin are plant hormones that act in the plant to manipulate its response to phosphate conditions. Dependent on phosphate conditions, strigolactones manipulate auxin transport and perception whereas auxin positively regulates strigolactones biosynthesis. This crosstalk may affect lateral root formation, root hair density and elongation and activity of phosphate transporters.

How can we harness quantitative genetic variation in crop root systems for agricultural improvement?

Christopher N. Topp, Adam L. Bray, Nathanael A. Ellis, and Zhengbin Liu

2016, 58(3): 213-225. doi:10.1111/jipb.12470

摘要 ( 1372 )

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This review article focuses on technologies and methodologies that allow us to measure root systems, the “hidden-half” of plants, and how we can utilize them to develop more stress resistant crop plants with fewer resources.

Long-distance nitrate signaling displays cytokinin dependent and independent branches

Sandrine Ruffel, Arthur Poitout, Gabriel Krouk, Gloria M. Coruzzi, and Benoit Lacombe

2016, 58(3): 226-229. doi:10.1111/jipb.12453

摘要 ( 1906 )

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Heterogeneous nutrient availability is frequent during plant life cycle. Therefore, long-distance communication is crucial to properly tune root development according to local nutrient availability and whole-plant needs. Here, we show that multiple traits of root development are the targets of nitrate long-distance signaling, dependently or independently of cytokinin biosynthesis.

Evolving technologies for growing, imaging and analyzing 3D root system architecture of crop plants

Miguel A. Piñeros, Brandon G. Larson, Jon E. Shaff, David J. Schneider, Alexandre Xavier Falcão, Lixing Yuan, Randy T. Clark, Eric J. Craft, Tyler W. Davis, Pierre-Luc Pradier, Nathanael M. Shaw, Ithipong Assaranurak, Susan R. McCouch, Craig Sturrock, Malcolm Bennett, and Leon V. Kochian

2016, 58(3): 230-241. doi:10.1111/jipb.12456

摘要 ( 1871 )

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Variation in root system architecture (RSA) plays a major role in efficient nutrient acquisition under limiting conditions. Here we describe improvements in the growth and digital imaging of root systems that allow for imaging and analysis of RSA traits for a wide range of crop species under diverse treatment conditions.

Use of genotype-environment interactions to elucidate the pattern of maize root plasticity to nitrogen deficiency

Pengcheng Li, Zhongjuan Zhuang, Hongguang Cai, Shuai Cheng, Ayaz Ali Soomro, Zhigang Liu, Riliang Gu, Guohua Mi, Lixing Yuan, and Fanjun Chen

2016, 58(3): 242-253. doi:10.1111/jipb.12384

摘要 ( 2382 )

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This study reveals the complicated root plasticity of maize in response to nitrogen deﬁciency that can be caused by genotype-environment (G × E) interactions. QTL mapping identified nine root QTLs exhibited signiﬁcant Q × E interaction effects that will be useful for developing maize cultivars to N deficiency.

Statistical modeling of nitrogen-dependent modulation of root system architecture in Arabidopsis thaliana

Takao Araya, Takuya Kubo, Nicolaus von Wirén, and Hideki Takahashi

2016, 58(3): 254-265. doi:10.1111/jipb.12433

摘要 ( 2024 )

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Nutrient and water supplies affect plant root architecture in the soil environment. Statistical modeling of root architectural traits provides evidence for root elongation and branching patterns being modulated in response to different forms and availabilities of nitrogen source in the environment.

Genetic dissection of maize seedling root system architecture traits using an ultra-high density bin-map and a recombinant inbred line population

Weibin Song, Baobao Wang, Andrew L Hauck, Xiaomei Dong, Jieping Li and Jinsheng Lai

2016, 58(3): 266-279. doi:10.1111/jipb.12452

摘要 ( 2110 )

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Maize root system architecture (RSA) mediates key functions of plant anchorage and acquisition of nutrients and water. Our study suggested that many of the 24 characterized RSA related traits were highly correlated. We also identified 62 QTLs, including four gene clusters, for these root traits.

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