Abstract Flowering plant reproduction requires precise delivery of the sperm cells to ovule by a pollen tube. Guidance signals from female are being identified; however, how responds those cues is largely unknown. Here, we show that two predicted cation/proton exchangers (CHX) in Arabidopsis thaliana, CHX21 and CHX23, essential for tube guidance. Male fertility was unchanged single chx21 or chx23 mutants. However, impaired double mutant pollen. Wild-type pistils pollinated with limited...

This study aims to develop learning devices, especially in the evaluation section of science junior high school, which turn after being implemented classroom is expected 21st century skills students. In particular, this to, 1) identify tools made by teachers so that they obtain a clear picture profile tool, 2) school tool supports skills. research includes development four stages, namely: decide, design, develop, and evaluate. The results indicate developed teacher are complete category,...

ABSTRACT Photoautotrophic bacteria have developed mechanisms to maintain K + homeostasis under conditions of changing ionic concentrations in the environment. Synechocystis sp. strain PCC 6803 contains genes encoding a well-characterized Ktr-type uptake transporter (Ktr) and putative ATP-dependent specific for (Kdp). The contributions each these transport systems cellular not yet been defined conclusively. To verify functionality Kdp, kdp were expressed Escherichia coli , where Kdp conferred...

Student Worksheets (LKPD) are teaching materials designed to assist students in the learning process. The design and content structure of LKPD reflect basic competencies, objectives, indicators. This study aims determine characteristics, validity, practicality, effectiveness based on mangrove ecosystem. research method follows 4D model, which consists stages define, design, development, disseminate. employs a pretest-posttest control group design. Validation reliability data validation...

Studies suggest that Ktr/Trk/HKT-type transporters have evolved from multiple gene fusions of simple K(+) channels the KcsA type into proteins span membrane at least eight times. Several positively charged residues are present in eighth transmembrane segment, M2(D), but not channels. Some models ion require a barrier to prevent free diffusion ions down their electrochemical gradient, and it is possible within transporter pore may being Here we studied functional role these positive three...

Abstract Mangrove is a plant species that grow in unique environment and serve as breeding, spawning, hatching, nursery grounds for many marine species. However, the damage of mangrove has negative impact on diversity fauna associated. This study aims to prove evaluate replanting South Coast East Lombok geographical position 116 ° 27 “0”´ 30´´´ LU - 8 48´0´´-8 51´0´. Data collection were done through observation, surveys quadrant methods. The data further analyzed detemine Diversity Index...

Various types of plants are found in Lemor Botanical Garden Forest (located Suela Village, East Lombok Regency), one which is epiphytic plants. Epiphytic plant that live attached to other This study aims determine the and most dominating species based on environmental characteristics Forest. research a descriptive research. Data collection was carried out using cruisi method from October November 2024. were analyzed qualitatively. The results showed Forest, 15 consisting 8 families 797...

Elucidation of the structure-function relationship a small number prokaryotic ion channels characterized so far greatly contributed to our knowledge on basic mechanisms conduction. We identified new potassium channel (SynK) in genome cyanobacterium Synechocystis sp. PCC6803, photosynthetic model organism. SynK, when expressed K+-uptake-system deficient E.coli strain, was able recover growth these organisms. The protein functions as selective Chinese Hamster Ovary cells. location SynK...

Mangrove ecosystems are natural resources in coastal areas that have their own ecological systems, and contributed as a place for local people to get daily needs. In this regard, the sustainability of mangroves is necessity, so do not lose livelihoods. The purpose paper assess success scale mangrove conservation its relationship where looking necessities life. Data collected through direct observation, questionnaires, interviews in-depth discussions. Furthermore, data were analyzed using...

Abstract Mangrove plants are widely used traditionally in treating various types of infectious diseases the people Lombok Island. This study aims to isolate and characterize endophytic bacteria from roots, stems, leaves fruits mangrove Rhizophora mucronata Lam. which grow coastal region Island (Gili Sulat), determine their antibacterial activity against some patogenic bacteria, such as Escherichia coli, Staphylococcus aureus, Bacillus cereus Pseudomonas aeruginosa . Media for isolation were...

Abstract. Syukur A, Al-Idrus Zulkifli L. 2021. Seagrass-associated fish species’ richness: evidence to support conservation along the South Coast of Lombok Island, Indonesia. Biodiversitas 22: 988-998. The concept seagrass at a global scale tends be less appropriate with regard environmental conditions regional and local scales, thus, there is need for scientific studies scales measures. This research aimed describe importance based on species richness seagrass-associated fish. Data were...

The Na+-dependent K+ uptake KtrABE system is essential for the adaptation of Synechocystis to salinity stress and high osmolality. While KtrB forms K+-translocating pore, role subunits KtrA KtrE Ktr function remains elusive. Here, we characterized in Ktr-mediated modulating Na+ dependency. Expression alone a uptake-deficient Escherichia coli strain conferred low activity that was not stimulated by Na+. Coexpression both with increased transport manner. were found be localized plasma membrane...

Environmental characteristics in coastal areas receive less attention from educational aspects, especially schools integrating with science learning. This research aims to develop mangrove ecological value-based teaching materials as a strategy improve students' literacy. The methods used are observation and quasi-experiments. Data analysis uses descriptive statistical using, then the normality homogeneity test is done SPSS 17.0. Next, hypothesis using ANOVA One Way. literacy ability of...

Herbarium kering merupakan material tumbuhan yang telah diawetkan dengan cara dikeringkan atau disebut juga spesimen herbarium kering. Spesimen tersebut bermanfaat sebagai bahan penunjang belajar biologi. Pembelajaran berbasis lingkungan pemanfaat media ditunjang teknik identifikasi akan membuat pembelajaran biologi menjadi lebih menarik dan menyenangkan, sehingga pengenalan deskripsi selama ini dilakukan menghafal dapat ditinggalkan. Oleh sebab itu pembuatan perlu disampaikan di sekolah....

Abstract : Strychnos ligustrina stem has been empirically used by the people of West Nusa Tenggara and Bali in treatment malaria, tooth ache diarrhea, but there is no scientific data that supports it. This study aims to determine prove antibacterial activity methanol extract pathogenic bacteria vitro vivo. research an experimental conducted measuring inhibition zone (mm) growth bacteria, determining minimum inhibitory concentration (MIC) killing (MKC) vitro, percentage S. The experiment was...

Abstract. Syukur A, Zulkifli L, Idrus AA, Hidayati BN. 2021. Species diversity of seagrass-associated bivalves as an ecological parameter to support seagrass conservation along with the Coastal Waters South Lombok, Indonesia. Biodiversitas 22: 5133-5144. Seagrass has a role in supporting survival marine life, such bivalves. This study aimed investigate relationship between bivalve species for conservation. The research approach was through observation and data collection using quadrant...

Batujai Dam is one of the largest dams in Central Lombok with an area 890 ha inundated water. The water from used for irrigation agricultural land, flood control, freshwater fisheries and development micro-hydro power plants. also a reservoir several rivers Lombok, namely: Leneng River, Sade River Dodokan River. This function makes place accumulation various forms pollutants carried by inlet rivers. Microalgae ecological parameters that can as bioindicator quality. purpose this study was...

Mangroves have a function as shelters, nurturing places, spawning grounds, and foraging can be habitat for wild animals. Brachyura is one of the mangrove biota associations whose lives are influenced by existence mangroves. Therefore, purpose this study to determine diversity crabs (Brachyura) relationship between density crab abundance in coastal area Gerupuk Beach Central Lombok. The sampled were contained observation plot, on surface substrate was taken hand, while those hole with help...

One of the ecosystems found in coastal areas is mangrove ecosystem. Mangroves have many functions including as a shelter, place to find food, breeding ground for aquatic biota. Damage can cause decrease quality ecosystems, especially life crabs. Mud crab one biota associated with mangroves and its influenced by presence forests. Therefore, purpose this study was determine diversity mud crabs that live association species several ecosystem Lembar, West Lombok. samples were taken using...

This study aims to determine the effectiveness of learning development guidance on success students’ field practice teachers in professional education program for Early Childhood and Elementary School. The population this were all students Kindergarten School Classes 2022 Faculty Teacher Training Education, University Mataram. sample used was Schools who taken using a proportional random sampling technique. variables consisted independent variables, namely supervisor’s role tools (X), as...

The objective of this study was to isolate endophytic bacteria from bark srikaya, analyzing antibacterial activity in S. aureus, B. cereus and E. coli pathogenic bacteria, characterizing capable inhibiting the growth identification able inhibit bacteria. Isolation using TSA NA media, bioassay on pathogen with concentration 106 cells / ml Ø 6 mm wells entering supernatant 100 μl. Supernatant obtained by growing NB media shaken shaker 150 cycles min for 48 h at 32ᵒC then culture centrifuge...

Abstrak. Penelitian ini bertujuan untuk menganalisis: (1) peningkatan kemampuan menulis jurnal belajar, (2) perbedaan metakognisi siswa yang belajar dengan tidak dan (3) hubungan siswa. Desain penelitian menggunakan nonequivalent control group design. Populasi dalam yaitu kelas X XI di SMAN 1 Pringgarata tahun ajaran 2014/2015 (285 orang). Sampel ditentukan melalui teknik simple random sampling. berjumlah 124 orang tersebar X3 IPA1 sebagai kelompok eksperimen, serta X2 danXI IPA2 kontrol....

Abstract The presence of seagrass in coastal waters has an ecological contribution to marine life’s sustainability, such as bivalves. This study aims assess the structurer bivalves communities associated with and relationship between communities’ structure environment against abundance bivalves—the Collected data using transect lines squares. analysis used descriptive statistical analysis. Besides, a regression was carried out community’s its found 40 species that include 11 families...

Phosphate solubilizing rhizobacteria can be used as a component in biofertilizer formulations to increase local and national food production without causing adverse risks the environment compared use of chemical fertilizers. In this regard, screening identification phosphate bacteria from rhizosphere several mangrove species that grow on coast Lombok Island has been carried out. The method isolation is Pikovskaya method. Screening activities have obtained 5 isolates (BRM) which are indicated...