J Integr Plant Biol

Announcement: Changes in the JIPB board

Chun-Ming Liu

2017, 59(6): 350-353. doi:10.1111/jipb.12553

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William J. Lucas, and Chun-Ming Liu

2017, 59(6): 354-355. doi:10.1111/jipb.12551

摘要 ( 791 )

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Plant xylem hydraulics: What we understand, current research, and future challenges

Martin D. Venturas, John S. Sperry and Uwe G. Hacke

2017, 59(6): 356-389. doi:10.1111/jipb.12534

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Water is transported in xylem conduits from the soil to the leaves under negative pressures. This is a metabolically inexpensive transport system but it is subjected to the risk of cavitation failure. Herein we address methodologies for measuring xylem resistance to cavitation, current debates, and future research opportunities in plant hydraulics.

Sucrose transporter2 contributes to maize growth, development, and crop yield

Kristen A Leach, Thu M Tran, Thomas L Slewinski, Robert B Meeley, and David M Braun

2017, 59(6): 390-408. doi:10.1111/jipb.12527

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In this study, the role of ZmSUT2, a maize vacuolar sucrose transport system, in carbon partitioning and crop yield is demonstrated. During the day, plants transiently store excess sucrose in vacuoles. Assays show that ZmSUT2 functions in sucrose export from the vacuole into the cytoplasm. Mutant maize plants lacking ZmSut2 have reduced growth, accumulate sugars and starch in their leaves, and have reduced crop yield.

Implications of nitrogen phloem loading for carbon metabolism and transport during Arabidopsis development

James P. Santiago and Mechthild Tegeder

2017, 59(6): 409-421. doi:10.1111/jipb.12533

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This study examines the relationship between nitrogen phloem loading, leaf carbon metabolism and sucrose partitioning during vegetative and reproductive growth phases of Arabidopsis. This work established that nitrogen transport processes have important implications for carbon fixation, assimilation and source-to-sink allocation, depending on plant growth stage.

The fungal UmSrt1 and maize ZmSUT1 sucrose transporters battle for plant sugar resources

Anke Wittek, Ingo Dreyer, Khaled A.S. Al-Rasheid, Norbert Sauer, Rainer Hedrich, and Dietmar Geiger

2017, 59(6): 422-435. doi:10.1111/jipb.12535

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The corn smut fungus exploits the sugar resources of its maize host and negatively affects yield and food quality. At the plant/pathogen interface, maize and corn smut sucrose transporters battle for plant sugar resources. Here, a combination of biophysical studies and mathematical simulations was employed to analyze this 'arms race' between plant and fungus.

Transcript profiling of a novel plant meristem, the monocot cambium

Matthew Zinkgraf, Suzanne Gerttula, and Andrew Groover

2017, 59(6): 436-449. doi:10.1111/jipb.12538

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This study explores the evolution of a novel monocot cambium through transcriptomics analysis of secondary (cambial) meristematic tissues collected from the monocots, Yucca and Cordyline, and the forest trees, poplar and Eucalyptus. Evidence is presented for the cooption of gene regulatory networks that enables some monocots to form a lateral meristem, thereby allowing them to grow in girth and make tree-like forms.

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