Journal of Applied Botany and Food Quality 2019-06-07T10:54:56+02:00 Journal of Applied Botany and Food Quality Open Journal Systems <p>This journal is published in collaboration with the German Society for Quality Research on Plant Foods and the Section Applied Botany of the German Botanical Society. It focuses on applied research in plant physiology and plant ecology, plant biotechnology, plant breeding and cultivation, phytomedicine, plant nutrition, plant stress and resistance, plant microbiology, plant analysis (including -omics techniques), and plant food chemistry.</p> Different response to 1-methylcyclopropene in two cultivars of Chinese pear fruit with contrasting softening characteristics 2019-06-07T10:54:55+02:00 Jianmei Wei Yudou Cheng Yunxiao Feng Xiudong Qi Jingang He Junfeng Guan <p>In this study, the change in softening and its related genes expression under influence of 500 nl L<sup>-1</sup> 1-methylcyclopropene (1-MCP) was assessed in the two Chinese pear fruit, ‘Jingbaili’ (<em>Pyrus ussuriensis</em> Maxim) and ‘Yali’ (<em>Pyrus bretschneideri</em> Rehd), which exhibit different softening characteristics. ‘Jingbaili’ pear fruit softened rapidly after harvest, and was strongly inhibited by 1-MCP. In contrast, there was no obvious change of firmness compared to the control after 1-MCP treatment in ‘Yali’ pear fruit. The respiration and ethylene production rates were reduced by 1-MCP at early storage in both two cultivars. ‘Jingbaili’ pear fruit exhibited dramatically increased expression levels of the softening-related genes, i.e., polygalacturonase1 (<em>PG1</em>), polygalacturonase2 (<em>PG2</em>), β-Galactosidase4 (<em>GAL4</em>), α-arabinofuranosidase1 (<em>ARF1</em>) and α-arabinofuranosidase2 (<em>ARF2</em>), and these genes’ expression levels were significantly decreased by 1-MCP treatment. In contrast, ‘Yali’ pear fruit showed lower expression levels of the above-mentioned genes, as well as a relatively smaller inhibition effect by 1-MCP treatment before day 27. These results suggest that ‘Jingbaili’ pear fruit are more sensitive to 1-MCP/ethylene than ‘Yali’ pear fruit during ripening.</p> 2019-06-07T10:50:46+02:00 ##submission.copyrightStatement## Influence of ripening stages on phytochemical composition and bioavailability of ginseng berry (Panax ginseng C.A. Meyer) 2019-06-07T10:54:56+02:00 Sora Jin Seung Hee Eom Ju-Sung Kim Ick Hyun Jo Tae Kyung Hyun <p>The presence of large amounts of bioactive compounds such as saponins and flavonoids in ginseng (<em>Panax ginseng</em>) berry suggests its potential as a functional resource for the food and medical industries, despite the fact that been considered a useless by-products of <em>P. ginseng</em>. In this study, we examined the variations in the antioxidant and anti-melanogenic potential of ginseng berry during the ripening process. We found that fully ripe berry extracts (Go-S3) contained the highest level of antioxidant and anti-melanogenic activities. Phytochemical screening suggested that alterations in polyphenol contents correlated with the variation in bioactive principles of ginseng berry during the ripening process. Furthermore, results obtained by quantitative real-time PCR, western blot, tyrosinase inhibition assay and molecular docking analysis suggested that Go-S3 probably inhibits tyrosinase activity by interacting with copper-coordinating histidines and second shell residues of tyrosinase, resulting in the reduction of melanin production in <em>α</em>-MSH-stimulated B16F10 cells. Taken together, these finding suggest the potential of ginseng berry as a resource for functional applications in the cosmetic industries and demonstrate that fruit ripening stages have profound effects on the pharmaceutical value of ginseng berry.</p> 2019-06-07T10:37:43+02:00 ##submission.copyrightStatement## Rapid analysis of the bioactive components in Saxifraga stolonifera, an edible and medicinal herb with anti-tumor effects, by HPLC-DAD, ESI/MSn 2019-05-16T13:48:33+02:00 Meng Zhang Dong Liu Yu-Qing Zhang <p><em>Saxifraga stolonifera</em> is an edible and herbaceous plant, which has been demonstrated to have anti-tumor effects in vivo and in vitro. The aim of this paper is to determine the main bioactive components in<br><em>S. stolonifera</em>, and their distribution in different parts of <em>S. stolonifera</em> and in <em>S. stolonifera</em> that was cultivated in different places in China using a high-performance liquid chromatography-diode array detector and electrospray ionization/ion trap mass spectrometry (HPLC-DAD-ESI/MSn). Four main components were identified and three were quantified. The contents of gallic acid, protocatechuic acid and bergenin had significant differences not only between the roots and stems-leaves of the plant, but also among different cultivated varieties of <em>S. stolonifera</em>. The experiment showed that the method used here exhibited good repeatability and recovery. Therefore, the results provide reliable data for research and development in the future on the level and distribution of the three bioactive components of S. stolonifera.</p> 2019-05-16T13:39:36+02:00 ##submission.copyrightStatement## Sodium in the leaf apoplast does not affect growth of maize (Zea mays L.) under saline field conditions 2019-05-16T13:48:33+02:00 Muhammad Shahzad Haris Usman Rafiq Ahmad Sabaz Ali Khan Zulfiqar A. Saqib Karl H. Mühling <p>Studies dealing with leaf apoplastic Na<sup>+</sup> concentration of monocots, such as maize, under actual saline soils are scarce. Therefore, the current study was aimed to investigate the growth, total ions and leaf apoplastic Na<sup>+</sup> concentration of salt sensitive maize plants growing in saline soils. Plants were subjected to salt stress with an electrical conductivity (EC) of 3, 8 10 and 14 dS m<sup>-1</sup> using completely randomized design (CRD) for 3 weeks. Shoot fresh weight, plant height, leaf area and leaf length of maize plants drastically decreased when plants were exposed to increasing salt stress. We found that maize could display a steep increase in Na<sup>+</sup> concentration in the total shoot biomass with maximum 82.3 μmol g<sup>-1</sup> FW, when plants were subjected to highest soil salinity at 14 dS m<sup>-1</sup>. As expected, other cations i.e., K<sup>+</sup>, Ca<sup>2+</sup> and Mg<sup>2+</sup> decreased with increasing EC of the soil compared to Na+. Surprisingly, a maximum of 17 mM Na+ were found in the leaf apoplast of maize grown under very high soil salinity at EC 14 dS m<sup>-1</sup>. Considering this lower leaf apoplastic Na+ concentration at such a high EC level in maize plants, current study does not corroborate that surplus sodium in the leaf apoplast can result in dehydration and cell death under salt stress.</p> 2019-05-16T13:31:26+02:00 ##submission.copyrightStatement## Obituary of Professor Dr. Reinhard Lieberei 2019-05-02T13:47:55+02:00 Dirk Selmar <p>On March 5th, 2019 Professor Reinhard Lieberei, one of the leading scientists in the field of Applied Botany, passed away in Gorleben, Germany, at the age of 70. As former president of the German Society of Applied Botany (1996-2005), he has made many efforts to modernise the society. In 2008 he became Editor-in-Chief of the newly renamed Journal of Applied Botany and Food Quality, which had just been joined by the German Society for Quality Research on Plant Foods. Together with his co-Editor-in-Chief Hartwig Schulz, he furthered the journal's development until its conversion to an open access online journal in 2013. After his retirement in 2013, Hans-Joachim Weigel succeeded him as Editor-in-Chief.</p> <p>To read the full obituary, please download the PDF.</p> 2019-05-02T00:00:00+02:00 ##submission.copyrightStatement##