Soft-X-irradiated pollens induce parthenocarpy in watermelon via rapid changes of hormone-signalings and hormonal regulation

Hu, Zhongyuan; Lan, Shanrong; Zhao, Ning; Su, Nan; Xue, Quan; Liu, Jie; Deng, Qin; Yang, Jinghua; Zhang, Mingfang

doi:10.1016/j.scienta.2019.02.036

Cited by 11 publications

(10 citation statements)

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“…Fruit set initiation is regulated across many species of dry and fleshy fruits by the combined accumulation of auxin and GA, with auxin being of primary importance (Gustafson, 1936; Wittwer et al ., 1957; Srivastava and Handa, 2005). The influence of both phytohormones has been widely demonstrated in studies comparing both pollinated and parthenocarpic fruits, including cucumbers and watermelons (Li et al ., 2014; Hu et al ., 2019). For example, in watermelon, auxin and auxin‐responsive genes show a rapid and early spike in expression during fruit set across both normally pollinated and parthenocarpic fruit, and an accumulation of GA increases notably around 1–3 days after pollination (DAP) (Hu et al ., 2019).…”

Section: Pollination Fertilization and Fruit Setmentioning

confidence: 99%

“…Conversely, blocking ethylene perception allows for GA accumulation to spike and proceed to induce parthenocarpy (Kumar et al ., 2014; Shinozaki et al ., 2015). In unpollinated watermelon flowers, it was observed that strong ethylene and ABA biosynthesis correlated with a higher expression of DELLA proteins and IAA9, thus suppressing GA and auxin levels to keep the ovary in a protected, dormant state prior to fertilization (Hu et al ., 2019). Following fertilization in many fleshy fruits, including tomato, however, auxin has been shown to negatively regulate ethylene (Shinozaki et al ., 2015).…”

Section: Pollination Fertilization and Fruit Setmentioning

confidence: 99%

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Phytohormones in fruit development and maturation

2021

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Summary Phytohormones are integral to the regulation of fruit development and maturation. This review expands upon current understanding of the relationship between hormone signaling and fruit development, emphasizing fleshy fruit and highlighting recent work in the model crop tomato (Solanum lycopersicum) and additional species. Fruit development comprises fruit set initiation, growth, and maturation and ripening. Fruit set transpires after fertilization and is associated with auxin and gibberellic acid (GA) signaling. Interaction between auxin and GAs, as well as other phytohormones, is mediated by auxin‐responsive Aux/IAA and ARF proteins. Fruit growth consists of cell division and expansion, the former shown to be influenced by auxin signaling. While regulation of cell expansion is less thoroughly understood, evidence indicates synergistic regulation via both auxin and GAs, with input from additional hormones. Fruit maturation, a transitional phase that precipitates ripening, occurs when auxin and GA levels subside with a concurrent rise in abscisic acid (ABA) and ethylene. During fruit ripening, ethylene plays a clear role in climacteric fruits, whereas non‐climacteric ripening is generally associated with ABA. Recent evidence indicates varying requirements for both hormones within both ripening physiologies, suggesting rebalancing and specification of roles for common regulators rather than reliance upon one. Numerous recent discoveries pertaining to the molecular basis of hormonal activity and crosstalk are discussed, while we also note that many questions remain such as the molecular basis of additional hormonal activities, the role of epigenome changes, and how prior discoveries translate to the plethora of angiosperm species.

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Section: Pollination Fertilization and Fruit Setmentioning

confidence: 99%

Section: Pollination Fertilization and Fruit Setmentioning

confidence: 99%

Phytohormones in fruit development and maturation

2021

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“…The growth regulator forchlorfenuron [ N -(2-chloro-4-pyridyl)- N ′-phenylurea (CPPU)] is a highly active cytokinin-like phytohormone; its biological activity is 10 to 100 times higher than that of 6-benzylaminopurine ( Zeng et al, 2016 ). CPPU is an example of a synthetic cytokinin that can regulate cell division and organogenesis ( Mihaljević and Vršek, 2009 ; Subotić et al, 2009 ) as well as fruit set and development ( Lewis et al, 1996 ; Zeng et al, 2016 ), parthenocarpy ( Zhang and Whiting, 2013 ; Hu et al, 2019 ), fruit shelf life ( Huang and Jiang, 2012 ), and abiotic stress resistance ( Gashaw et al, 2014 ). Most of these processes have been investigated in fruit and vegetable crops.…”

Section: Introductionmentioning

confidence: 99%

Change in Sucrose Cleavage Pattern and Rapid Starch Accumulation Govern Lily Shoot-to-Bulblet Transition in vitro

Ren

Gao

et al. 2021

Front. Plant Sci.

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In bulb crops, bulbing is a key progress in micropropagation and is the feature that most distinguishes bulbous crops from other plants. Generally, bulbing involves a shoot-to-bulblet transition; however, the underlying mechanism remains elusive. We explored this process by tracking the shoot-to-bulblet transition under different culture conditions. Rapid starch accumulation occurred at 15 days after transplanting (DAT) in the bulblet-inducing treatments as confirmed via histological observations and the significant elevation of starch synthesis related-gene transcription, including LohAGPS, LohAGPL, LohGBSS, LohSS, and LohSBE. However, for shoots that did not transition to bulblets and maintained the shoot status, much higher soluble sugars were detected. Interestingly, we observed a clear shift from invertase-catalyzed to sucrose synthase-catalyzed sucrose cleavage pattern based on the differential expression of LohCWIN and LohSuSy during the key transition stage (prior to and after bulbing at 0–15 DAT). Shoots that transitioned into bulblets showed significantly higher LohSuSy expression, especially LohSuSy4 expression, than shoots that did not transition. A symplastic phloem unloading pathway at the bulblet emergence stage (15 DAT) was verified via the 6(5)-carboxyfluorescein diacetate fluorescent tracer. We propose that starch is the fundamental compound in the shoot-to-bulblet transition and that starch synthesis is likely triggered by the switch from apoplastic to symplastic sucrose unloading, which may be related to sucrose depletion. Furthermore, this study is the first to provide a complete inventory of the genes involved in starch metabolism based on our transcriptome data. Two of these genes, LohAGPS1.2b and LohSSIIId, were verified by rapid amplification of cDNA ends cloning, and these data will provide additional support for Lilium research since whole genome is currently lacking.

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“…Tozlaşmamış karpuz çiçeklerinde, güçlü ABA biyosentezinin, yumurtalığı döllenmeden önce korumalı, hareketsiz bir durumda tuttuğu gözlemlenmiştir [20].…”

Section: Sonuçlar Ve Tartişmaunclassified

Ophrys mammosa Desf. subsp. mammosa (Orchidaceae) Polinaryumlarında Bazı Hormonların Araştırılması

Aybeke

2023

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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Orkidelerde polenler polinaryum denen kümeler şeklindedir ve orkide polinaryumlarında hormonal hiçbir çalışmaya rastlanmamıştır. Bu nedenle çalışmanın amacı orkide polinaryumlarındaki hormonların tespit edilmesidir. Bu amaçla araziden toplanan Ophrys mammosa subsp mammosa polinaryumları, laboratuvara getirilmiştir. Çalışmada Salisilik asit(SA), Absisik asit(ABA), Jasmonik asit(JA), Gibberellik asit(GA3) ve Indol-3-asetik(IAA)asit hormonları numunelerde taranmıştır. Hidrolize olmayan bitkisel ekstraksyon ile muamele edilen numuneler LC–MS/MS cihazında çalışmaya alınmıştır. LC–MS/MS cihaz çalışması sonucunda Salisilik asit 2,6736 ng/gr, Absisik asit 65,6926 ng/gr, Jasmonik asit 12,2367 ng/gr bulunmuş, Gibberellik asit ve Indol-3-Asetik asit tespit edilmemiştir. Tespit edilen bulgular, güncel literatürler ışığında tartışılmıştır ve ileride yapılacak orkide üreme biyolojisi çalışmalarına katkıda bulunacağına inanılmaktadır. Çalışma bu yönüyle bir ilk olma niteliğindedir.

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Soft-X-irradiated pollens induce parthenocarpy in watermelon via rapid changes of hormone-signalings and hormonal regulation

Cited by 11 publications

References 50 publications

Phytohormones in fruit development and maturation

Phytohormones in fruit development and maturation

Change in Sucrose Cleavage Pattern and Rapid Starch Accumulation Govern Lily Shoot-to-Bulblet Transition in vitro

Ophrys mammosa Desf. subsp. mammosa (Orchidaceae) Polinaryumlarında Bazı Hormonların Araştırılması

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