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作者:... Rüdiger Reichel , Siegfried Jahnke , Robert Koller
来源:[J].Plant Methods(IF 2.667), 2017, Vol.13 (1)
摘要:Root systems are highly plastic and adapt according to their soil environment. Studying the particular influence of soils on root development necessitates the adaptation and evaluation of imaging methods for multiple substrates. Non-invasive 3D root images in soil can be obtained...
作者:Siegfried Jahnke , Markus Boner ...
来源:[J].Food Chemistry(IF 3.334), 2013, Vol.141 (3), pp.2582-2590
摘要:Abstract(#br)The intrinsic isotopic labelling of plants with 13 CO 2 is an effective method to generate highly labelled compounds using photosynthesis and avoiding labour-intensive complex organic syntheses. In this study, the intrinsic isotopic labelling of polyphenols in p...
作者:... Uwe Rascher , Siegfried Jahnke , Ulrich Schurr
来源:[J].Current Opinion in Biotechnology(IF 7.86), 2012, Vol.23 (2), pp.227-235
摘要:Noninvasive imaging sensors and computer vision approaches are key technologies to quantify plant structure, physiological status, and performance. Today, imaging sensors exploit a wide range of the electromagnetic spectrum, and they can be deployed to measure a growing number of...
作者:Siegfried Jahnke , Gerhard Stöcklin , Johannes Willenbrink
来源:[J].Planta(IF 3.347), 1981, Vol.153 (1), pp.56-63
摘要:Abstract(#br)An array of three multipliers with BGO-crystals arranged along the petiole has been used to study the movement of 11 C-assimilate in Marsilea quadrifolia L. The leaf blades were exposed to a 3–6 min pulse of 11 CO 2 under continuous light. Data were recorded wit...
作者:Siegfried Jahnke , Dirk Bier ...
来源:[J].Planta(IF 3.347), 1989, Vol.180 (1), pp.53-60
摘要:Abstract(#br)The short-lived isotope 11 C (t 1/2 =20.4 min) has been used to study assimilate distribution in intact pea plants ( Pisum sativum L.). Radiolabel was measured at the leaf fed with 11 CO 2 (feed-leaf), at the ovary of the flower subtended by this leaf, and in shoot a...
作者:... Alexander Grube , Siegfried Jahnke , Stefanie Neumann
来源:[J].Planta(IF 3.347), 1995, Vol.197 (1), pp.11-18
摘要:Abstract(#br)Detached leaves of Cyclamen persicum Mill. can be used as a simple source-sink system. Phloem transport in the excised material was monitored by the noninvasive 11 C-technique. Assimilate movement stopped immediately when the petiole was cut off. However, within...
作者:... Ulrich Schurr , Norman Uhlmann , Siegfried Jahnke
来源:[J].Plant Methods(IF 2.667), 2015, Vol.11 (1)
摘要:Abstract(#br) Background(#br)Roots are vital to plants for soil exploration and uptake of water and nutrients. Root performance is critical for growth and yield of plants, in particular when resources are limited. Since roots develop in strong interaction with the soil matrix, to...
作者:... Dagmar van Dusschoten , Gregor Huber , Siegfried Jahnke
来源:[J].Sensors(IF 1.953), 2020, Vol.20 (3)
摘要:We introduce a novel technique to measure volumes of any shaped objects based on acoustic components. The focus is on small objects with rough surfaces, such as plant seeds. The method allows measurement of object volumes more than 1000 times smaller than the volume of the s...
作者:... Manfred Jensen , Wilfried F. Wolff , Siegfried Jahnke
来源:[J].New Phytologist(IF 6.736), 2006, Vol.169 (4), pp.779-788
摘要:Summary(#br) • Gas exchange is generally regarded to occur between the leaf interior and ambient air, i.e. in vertical (anticlinal) directions of leaf blades. However, inside homobaric leaves, gas movement occurs also in lateral dir...

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