Syahnada Jaya Syaifullah

Bio: Syahnada Jaya Syaifullah is an academic researcher from University of Copenhagen. The author has contributed to research in topics: External auditor & Management system. The author has an hindex of 2, co-authored 2 publications receiving 58 citations.

Integration of multi-omics techniques and physiological phenotyping within a holistic phenomics approach to study senescence in model and crop plants.

Abstract: The study of senescence in plants is complicated by diverse levels of temporal and spatial dynamics as well as the impact of external biotic and abiotic factors and crop plant management. Whereas the molecular mechanisms involved in developmentally regulated leaf senescence are very well understood, in particular in the annual model plant species Arabidopsis, senescence of other organs such as the flower, fruit, and root is much less studied as well as senescence in perennials such as trees. This review addresses the need for the integration of multi-omics techniques and physiological phenotyping into holistic phenomics approaches to dissect the complex phenomenon of senescence. That became feasible through major advances in the establishment of various, complementary 'omics' technologies. Such an interdisciplinary approach will also need to consider knowledge from the animal field, in particular in relation to novel regulators such as small, non-coding RNAs, epigenetic control and telomere length. Such a characterization of phenotypes via the acquisition of high-dimensional datasets within a systems biology approach will allow us to systematically characterize the various programmes governing senescence beyond leaf senescence in Arabidopsis and to elucidate the underlying molecular processes. Such a multi-omics approach is expected to also spur the application of results from model plants to agriculture and their verification for sustainable and environmentally friendly improvement of crop plant stress resilience and productivity and contribute to improvements based on postharvest physiology for the food industry and the benefit of its customers.

Integration of ISO 22000 (2018) and HAS 23000 through Management System Audit: Case Study in Corned Beef Producer

Abstract: Integrated Management System (IMS) based audit can assist the internal and external auditor to conduct an audit effectively and efficiently while checking compliance of Food Safety Management System and Halal Assurance System in the food industry. Corned beef is a product categorized as critical both in terms of halal and food safety. Implementing a food safety management system and halal assurance in corned beef industries is a challenge for producers and external auditors from inspection agencies. Based on the requirements equality approach, an Integrated Management System can be developed, referring to ISO 22000 : 2018 and HAS 23000. This research aims to combine the requirements of ISO 22000 : 2018 and HAS 23000 to be used for audit activity, as well as formulating recommendations for the corned beef producers in both requirements based on a new version of ISO 22000 : 2018. According to the analysis of requirements equality on each requirement objective, there are 14 of 30 sub-clauses of ISO 22000 : 2018 that can be integrated with 9 HAS criteria. There are 2 HAS criteria that cannot be integrated with sub clauses of ISO 22000 : 2018, namely criteria number 4 material and 5 product. When the IMS clauses are used in audit to one of corned beef company, the percentage of compliance with the IMS requirements is 90.6% in PT XYZ. The nonconformities related to ISO 22000 : 2018 found on a new clause that has not existed in the previous version ISO 22000: 2005. This gap creates some recommendations for PT XYZ. However, IMS based audit makes the audit for halal and food safety compliance be more effective that can combine checking of food safety and halal in one audit. Furthermore, IMS based audit makes the audit be more time efficient, by reducing the mandays.

Abiotic Stress and Reactive Oxygen Species: Generation, Signaling, and Defense Mechanisms

Abstract: Climate change is an invisible, silent killer with calamitous effects on living organisms As the sessile organism, plants experience a diverse array of abiotic stresses during ontogenesis The relentless climatic changes amplify the intensity and duration of stresses, making plants dwindle to survive Plants convert 1-2% of consumed oxygen into reactive oxygen species (ROS), in particular, singlet oxygen (1O2), superoxide radical (O2•-), hydrogen peroxide (H2O2), hydroxyl radical (•OH), etc as a byproduct of aerobic metabolism in different cell organelles such as chloroplast, mitochondria, etc The regulatory network comprising enzymatic and non-enzymatic antioxidant systems tends to keep the magnitude of ROS within plant cells to a non-damaging level However, under stress conditions, the production rate of ROS increases exponentially, exceeding the potential of antioxidant scavengers instigating oxidative burst, which affects biomolecules and disturbs cellular redox homeostasis ROS are similar to a double-edged sword; and, when present below the threshold level, mediate redox signaling pathways that actuate plant growth, development, and acclimatization against stresses The production of ROS in plant cells displays both detrimental and beneficial effects However, exact pathways of ROS mediated stress alleviation are yet to be fully elucidated Therefore, the review deposits information about the status of known sites of production, signaling mechanisms/pathways, effects, and management of ROS within plant cells under stress In addition, the role played by advancement in modern techniques such as molecular priming, systems biology, phenomics, and crop modeling in preventing oxidative stress, as well as diverting ROS into signaling pathways has been canvassed

Role of Cytokinins for Interactions of Plants With Microbial Pathogens and Pest Insects.

Abstract: It has been recognized that cytokinins are plant hormones that influence not only numerous aspects of plant growth, development and physiology, including cell division, chloroplast differentiation and delay of senescence but the interaction with other organisms, including pathogens. Cytokinins are not only produced by plants but are also by other prokaryotic and eukaryotic organism such as bacteria, fungi, microalgae and insects. Notably, cytokinins are produced both by pathogenic and also beneficial microbes and are known to induce resistance in plants against pathogen infections. In this review the contrasting role of cytokinin for the defence and susceptibility of plants against bacterial and fungal pathogen and pest insects is assessed. We also discuss the cross talk of cytokinins with other phytohormones and the underlying mechanism involved in enhancing plant immunity against pathogen infections and explore possible practical applications in crop plant production.

Marine Natural Products from Microalgae: An -Omics Overview.

Abstract: Over the last decade, genome sequences and other -omics datasets have been produced for a wide range of microalgae, and several others are on the way. Marine microalgae possess distinct and unique metabolic pathways, and can potentially produce specific secondary metabolites with biological activity (e.g., antipredator, allelopathic, antiproliferative, cytotoxic, anticancer, photoprotective, as well as anti-infective and antifouling activities). Because microalgae are very diverse, and adapted to a broad variety of environmental conditions, the chances to find novel and unexplored bioactive metabolites with properties of interest for biotechnological and biomedical applications are high. This review presents a comprehensive overview of the current efforts and of the available solutions to produce, explore and exploit -omics datasets, with the aim of identifying species and strains with the highest potential for the identification of novel marine natural products. In addition, funding efforts for the implementation of marine microalgal -omics resources and future perspectives are presented as well.

Rice yield formation under high day and night temperatures-A prerequisite to ensure future food security.

Abstract: Increasing temperatures resulting from climate change dramatically impact rice crop production in Asia. Depending on the specific stage of rice development, heat stress reduces tiller/panicle number, decreases grain number per plant and lower grain weight, thus negatively impacting yield formation. Hence improving rice crop tolerance to heat stress in terms of sustaining yield stability under high day temperature (HDT), high night temperature (HNT), or combined high day and night temperature (HDNT) will bolster future food security. In this review article, we highlight the phenological alterations caused by heat and the underlying molecular-physiological and genetic mechanisms operating under different types of heat conditions (HDT, HNT, and HDNT) to understand heat tolerance. Based on our synthesis of HDT, HNT, and HDNT effects on rice yield components, we outline future breeding strategies to contribute to sustained food security under climate change.