Evaluating Ethylene Sensitivity within the Family Solanaceae at Different Developmental Stages

Edelman, Nichole F.; Jones, Michelle L.

doi:10.21273/hortsci.49.5.628

Cited by 13 publications

(12 citation statements)

References 32 publications

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“…Both of these nastic movements have been attributed to an altered ethylene metabolism, either by accumulation of ethylene gas due to diffusion barriers in water ( Sasidharan et al, 2017 ), or by upregulation of its biosynthesis pathway ( Bradford and Yang, 1980 ). Within the Solanaceae family, differentiation of epinasty in response to ethylene has been previously observed ( Edelman and Jones, 2014 ), as well as of their plasticity to waterlogging ( Hartman et al, 2020 ). Our results show that there indeed exists a differential responsiveness of species such as tomato, potato, and bell pepper to waterlogging, but also that leaf age plays a substantial role in this epinastic response ( Figures 4 and 6 ).…”

Section: Discussionmentioning

confidence: 96%

A digital sensor to measure real-time leaf movements and detect abiotic stress in plants

et al. 2021

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Plant and plant organ movements are the result of a complex integration of endogenous growth and developmental responses, partially controlled by the circadian clock, and external environmental cues. Monitoring of plant motion is typically done by image-based phenotyping techniques with the aid of computer vision algorithms. Here we present a method to measure leaf movements using a digital inertial measurement unit (IMU) sensor. The lightweight sensor is easily attachable to a leaf or plant organ and records angular traits in real-time for two dimensions (pitch and roll) with high resolution (measured sensor oscillations of 0.36° ± 0.53° for pitch and 0.50° ± 0.65° for roll). We were able to record simple movements such as petiole bending, as well as complex lamina motions, in several crops, ranging from tomato to banana. We also assessed growth responses in terms of lettuce rosette expansion and maize seedling stem movements. The IMU sensors are capable of detecting small changes of nutations (i.e., bending movements) in leaves of different ages and in different plant species. In addition, the sensor system can also monitor stress-induced leaf movements. We observed that unfavorable environmental conditions evoke certain leaf movements, such as drastic epinastic responses, as well as subtle fading of the amplitude of nutations. In summary, the presented digital sensor system enables continuous detection of a variety of leaf motions with high precision, and is a low-cost tool in the field of plant phenotyping, with potential applications in early stress detection.

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Section: Discussionmentioning

confidence: 96%

A digital sensor to measure real-time leaf movements and detect abiotic stress in plants

et al. 2021

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“…After harvesting, plant organs continue living, and both respiration and transpiration processes are considered the major causes of postharvest losses and poor quality [39]. Senescence is controlled by developmental [40,41] and environmental signals [42]. Among environmental factors, temperature plays a major role in slowing down these processes, affecting the metabolism of harvested flowers and their shelf life [11,38,43].…”

Section: Introductionmentioning

confidence: 99%

Sensory Profile, Shelf Life, and Dynamics of Bioactive Compounds during Cold Storage of 17 Edible Flowers

et al. 2021

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In this study, 17 edible flowers (Allium ursinum L., Borago officinalis L., Calendula officinalis L., Centaurea cyanus L., Cichorium intybus L., Dianthus carthusianorum L., Lavandula angustifolia Mill., Leucanthemum vulgare (Vaill.) Lam., Paeonia officinalis L., Primula veris L., Robinia pseudoacacia L., Rosa canina L., Rosa pendulina L., Salvia pratensis L., Sambucus nigra L., Taraxacum officinale Weber, and Tropaeolum majus L.) were investigated to assess their sensory profile at harvest and their shelf life and bioactive compounds dynamics during cold storage. The emerging market of edible flowers lacks this information; thus, the characteristics and requirements of different flower species were provided. In detail, a quantitative descriptive analysis was performed by trained panelists at flower harvest, evaluating 10 sensory descriptors (intensity of sweet, sour, bitter, salt, smell, specific flower aroma, and herbaceous aroma; spiciness, chewiness, and astringency). Flower visual quality, biologically active compounds content (total polyphenols and anthocyanins), and antioxidant activity (FRAP, DPPH, and ABTS assays) were evaluated both at harvest and during storage at 4 °C for 14 days to assess their shelf life. Generally, species had a wide range of peculiar sensory and phytochemical characteristics at harvest, as well as shelf life and bioactive compounds dynamics during postharvest. A strong aroma was indicated for A. ursinum, D. carthusianorum, L. angustifolia, and L. vulgare, while B. officinalis and C. officinalis had very low values for all aroma and taste descriptors, resulting in poor sensory profiles. At harvest, P. officinalis, R. canina, and R. pendulina exhibited the highest values of polyphenols (884–1271 mg of gallic acid equivalents per 100 g) and antioxidant activity (204–274 mmol Fe2+/kg for FRAP, 132–232 and 43–58 µmol of Trolox equivalent per g for DPPH and ABTS). The species with the longest shelf life in terms of acceptable visual quality was R. pendulina (14 days), followed by R. canina (10 days). All the other species lasted seven days, except for C. intybus and T. officinale that did not reach day 3. During cold storage, the content of bioactive compounds differed, as total phenolics followed a different trend according to the species and anthocyanins remained almost unaltered for 14 days. Considering antioxidant activity, ABTS values were the least variable, varying in only four species (A. ursinum, D. carthusianorum, L. angustifolia, and P. officinalis), while both DPPH and FRAP values varied in eight species. Taken together, the knowledge of sensory profiles, phytochemical characteristics and shelf life can provide information to select suitable species for the emerging edible flower market.

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“…As mentioned earlier, this could possibly be associated with the cassava leaf physiological maturity. According to Edelman and Jones (2014), the leaf developmental stage influences sensitivity to ethylene. Figure 3.…”

Section: Resultsmentioning

confidence: 99%

<b>Manihot leaf abscission induced by ethrel

et al. 2018

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This study aimed to assess the impact of ethrel spraying on cassava leaf abscission at different stages of cultivar development. Two experiments were performed using randomized block designs, with 15 total treatments (three repetitions of five conditions) arranged according to the factorial scheme 3 x 5. Experiment 1 (ethrel application in the vegetative development period) consisted of three seasons (November 2013 and 2014, January and February 2014) and four concentrations of ethrel (1,500, 3,000, 4,500, and 6,000 ppm) and a control (no application); Experiment 2 (application in pre-harvest period) consisted of three periods of ethrel spraying (20, 40, and 60 days before harvest), four ethrel concentrations (1,500, 3,000, 4,500, and 6,000 ppm) and a control (without ethrel). The characteristics evaluated included the number of fallen leaves at 20 and 70 days after application, total leaf dry mass and foliar degreening. The effects of different concentrations and times of application of ethrel were significant during the first seven days. Ethrel application during the second period of vegetative development did not affect the number of fallen leaves over a period of 70 days.

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Evaluating Ethylene Sensitivity within the Family Solanaceae at Different Developmental Stages

Cited by 13 publications

References 32 publications

A digital sensor to measure real-time leaf movements and detect abiotic stress in plants

A digital sensor to measure real-time leaf movements and detect abiotic stress in plants

Sensory Profile, Shelf Life, and Dynamics of Bioactive Compounds during Cold Storage of 17 Edible Flowers

<b>Manihot leaf abscission induced by ethrel

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